(最新)年日立空调维修故障点手册使用方法

4. 选择功能..................................................................................................................................................4-1 4.1 室内机（RPF(l) – FSG(E)，RPK-FSGM 和 RPC-FSG1 系列）.......................................................4-1 4.1.1遥控器开/关功能........................................................................................................................4-1 4.1.2电源开/关功能1（电源接通时的自动功能）..........................................................................4-5 4.1.3电源开/关功能2（电源故障后的重启功能）..........................................................................4-5 4.1.4室内电热调控器的控制..............................................................................................................4-6 4.1.5遥控温度传感器的操作控制......................................................................................................4-7 4.1.6外部输入改变制冷或制热模式的设定（水平信号输入）......................................................4-7 4.1.7截取操作信号..............................................................................................................................4-8 4.2 室内机（RPI-FSG1，RCI-FSG1 和 RCD-FSG1 系列） ...................................................................4-11 4.2.1室内机印刷电路板输入输出设置..............................................................................................4-11 4.2.2温度遥控器功能..........................................................................................................................4-13 4.2.3遥控器开/关功能.........................................................................................................................4-14 4.2.4电源开/关功能1（电源接通时的自动功能）..........................................................................4-18 4.2.5电源开/关功能2（电源故障后的重启功能）..........................................................................4-18 4.2.6室内电热调控器的控制..............................................................................................................4-19 4.2.7遥控温度传感器的操作控制......................................................................................................4-20 4.2.8外部输入改变制冷或制热模式的设定......................................................................................4-20 4.2.9截取操作信号..............................................................................................................................4-21 4.3 室外机...................................................................................................................................................4-25 4.3.1指令.............................................................................................................................................4-27 4.3.2强制停机......................................................................................................................................4-27 4.3.3固定运行模式..............................................................................................................................4-28 4.3.4霜冻传感器..................................................................................................................................4-28 4.3.5除霜条件的改变..........................................................................................................................4-29 4.3.6制热模式下温控关闭时对室内风机的控制..............................................................................4-30 4.3.7各个季节里的制热操作..............................................................................................................4-30 4.3.8各个季节里的制冷操作..............................................................................................................4-31 4.3.9夜间转换（低噪音）运行..........................................................................................................4-32 4.3.10截取室外机印刷电路板的信号..................................................................................................4-334.4遥控器PC-2H2.....................................................................................................................................4-35 4.4.1零件名称......................................................................................................................................4-35 4.4.2同步运行......................................................................................................................................4-36 4.4.3双遥控器操作系统......................................................................................................................4-38 4.4.4功能设定选择..............................................................................................................................4-39 4.4.5遥控器功能选择..........................................................................................................................4-42 4.4.6 寻址（ADDS）和制冷剂循环编号（RN）显示 .....................................................................4-474.5无线遥控器PC-LH3 ............................................................................................................................4-48 4.5.1零件名称......................................................................................................................................4-48 4.5.2室内机组并列安装的识别..........................................................................................................4-49 4.5.3同步运行......................................................................................................................................4-50 4.5.4紧急操作......................................................................................................................................4-52 4.5.5选择功能设定..............................................................................................................................4-53 4.5.6无线遥控器的选择功能..............................................................................................................4-54 4.6七日时控器，PSC-3T..........................................................................................................................4-55 4.7中央控制器PSC-3S1 ...........................................................................................................................4-57 4.7.1零件名称......................................................................................................................................4-57 4.7.2系统.............................................................................................................................................4-58 4.7.3中央控制器的操作步骤..............................................................................................................4-60选择功能(4.1室内机) 4.选择功能4.1室内机（RPI(I) – FSG(E)，RPK-FSGM和RPC-FSG1系列）4.1.1遥控器开/关功能该功能提供远程自动停机或系统启动的控制。

使用产品前，请仔细阅读本使用、安装说明书，并请妥善保管使用安装说明书KFR-50W/BpA KFR-50W/BpAWP 适用机种型号：适用机种制品号：HITACHIRAQ-1F50EVY/RAQ-1F50EVYWP/RAC-1F50EVYRAC-1F50EVY执行标准：GB/T7725-2004GB4706.32-2004GB4343.1-2009GB17625.1-2003使用说明目 录注意事项......................................................................................................................................1产品主要技术参数........................................................................................................................3.....................................................................................................................................................9.....................................................................................................................................................10.....................................................................................................................................................11一键清洁功能.............................................................................................................................................11.....................................................................................................................................................12遥控器电池的更换法.................................................................................................................................12.............................................................................................................................13.....................................................................................................................................14故障查找......................................................................................................................................2机组介绍.....................................................................................................................................................4接收器指示说明.........................................................................................................................................4室内机部品名称.........................................................................................................................................5运转之前.....................................................................................................................................................5遥控器各部分名称和功能.........................................................................................................................6自动运转.....................................................................................................................................................8制热运转除湿运转制冷运转送风运转睡眠定时器的设定功能定时器的设定功能自动控制.. (15)安全须知......................................................................................................................................16安装所需的工具及仪器.............................................................................................................................16运输及吊装.................................................................................................................................................17室内机的安装.............................................................................................................................................17排水管的安装.....................................................................................................................................21接收器（显示接受操作系统）的安装.......................................................................................23保护和控制装置室外机的安装 制冷剂管道安装真空排气顺序电线连接试运行...............................................................................................................................................................23............................................................................................................................................24室外机冷凝水处理.....................................................................................................................................25.........................................................................................................................................25.............................................................................................................................................28.....................................................................................................................................................29.........................................................................................................................................................31附图 (32)安装说明图例意义如下注意事项•电源为单相 220V~ 电压如电压低于或高出正常电压10%以上，空调器将不能正常工作甚至烧断保险丝，易损坏空调器，建议配用220V~ 稳压器。

空调维修说明书介绍空调故障排除和维修方法空调维修说明书1. 介绍空调维修说明书旨在提供详细的故障排除和维修方法，帮助用户解决空调故障并确保其正常运行。

本文将详细介绍空调故障排除和维修步骤，并提供一些常见问题的解决办法。

2. 安全须知在进行空调故障排除和维修之前，请务必注意以下安全须知：- 在操作空调之前，确保断开电源并拔掉电源插头。

- 如果需要清洁或维修内部部件，请确保拥有相应的技能和知识，或者请专业人士进行操作。

- 注意使用合适的工具和装备，避免发生意外伤害。

- 在排查故障时，注意不要弄湿任何电气部件，以避免触电风险。

- 如果无法解决故障，请联系专业维修人员。

3. 故障排除方法以下列举几种常见的空调故障，并提供相应的排除方法：3.1 空调无法启动- 检查空调是否连接电源，并确保电源插头插紧。

- 检查电源是否正常供电，可以尝试插拔其他设备，检查电源插座是否正常工作。

- 检查遥控器电池是否已耗尽，并及时更换。

3.2 空调无冷气输出- 检查空调的温度设定值，确保其低于室内当前温度。

- 检查空调是否设置在制冷模式下，并确保制冷模式正常工作。

- 检查室外机是否受到异物堵塞，清理室外机周围的杂物。

- 检查空调滤网是否已清洁，如有需要请及时清洗或更换滤网。

3.3 空调异常噪音- 检查空调是否摆放平稳，是否与墙面有接触或与其他物件碰撞。

- 检查室外机是否安装牢固，排除室外机引起的异响。

- 检查空调内部是否有异物进入，如有需要请清理空调内部。

4. 维修方法对于一些需要更换零件或进行内部维修的问题，建议联系专业的空调维修人员进行操作。

以下是一些常见维修操作的注意事项：4.1 清洁空调滤网- 关闭空调电源，并拔掉电源插头。

- 打开空调面板，并取出滤网。

- 用清水或温和的洗涤剂轻轻清洗滤网，然后晾干。

- 将滤网重新安装到空调中，并确保安装牢固。

4.2 更换遥控器电池- 打开遥控器背面的电池仓盖。

- 取出旧电池，并确保正确把新电池安装到正确的极性位置。

日立空调技术手册本文档为日立空调技术手册，旨在提供详细的关于日立空调产品及其相关技术的信息。

以下是各章节内容：1. 引言1.1 目的和范围1.2 文档结构2. 日立公司简介2.1 公司背景与历史沿革2.2 公司使命与价值观3. 空调基础知识3.１工作原理a) 制冷循环过程解析b) 恒温控制原理３.２主要组成部分a）压缩机b）蒸发器c）冷凝器d）膨胀阀e）其他辅助设备4.产品系列概述４－１高墙式空调系统Ａ、特点B、适用场所C、安装方式D、使用注意事项E, 维护保养方法F, 故障排除G , 型号参数表格H ，附件：高墙式安装示意图5 . 技术规格说明书（以某一型号为例）A , 外形尺寸B ，电气连接C ，制冷性能D ，风量参数E，噪音指标F, 安装要求G , 维护保养方法H ，故障排除6. 高级功能与技术创新6.１智能控制系统a）远程遥控b）定时开关机c) 温度自适应调节d) 睡眠模式e) 节能模式f ) 其他高级功能7 . 法律名词及注释：A、合同法：是规范当事人之间的权利义务关系以达到维护社会公共秩序和经济秩序目的而由国家立法者设立并强行实施的一种特殊形态。

B、消费者权益保护法：为了促进商品流通，加快物质文明建设步伐。

对于侵害消费者合法权益行为给予惩罚，并且通过这个手段来推动市场发展。

本文档涉及附件如下：1. 高墙式安装示意图（见附件H）请注意，在使用或参考本文档内容前，请确保已详细阅读相关产品说明书和用户手册，并按照厂商提供的操作指南进行操作。

日立空调天津维修点电话查询报修放坑攻略日立空调天津维修点在哪里，聚信口碑网汇总日立空调天津维修点大全，日立空调天津维修点电话查询报修放坑攻略，日立空调故障快速处理办法，看日立空调天津维修点电话查询拨打快捷报修窍门，了解日立空调售后使用保养知识，处理日立空调售后维修使用故障。

•日立故障排查与操作办法：遥控开机或手按柜机面板按键空调无反应，室内机指示灯或显示屏不亮；①建议用户首先检查一下家中的配电箱上的电源开关是否跳闸，或电源插座与空调电源插头是否接触良好，确定是否有电；②建议用户将空调电源断开5分钟以上，（电源插头或电源开关断开）再将同空调电试机观察是否正常。

③检查遥控器内的电池是否无电容量、（观察如果按遥控器一瞬间遥控器上的显示屏字符立即很暗淡或消失了说明电池没有电量了）、电池是否在电池仓内与弹簧夹接触良好、电池是否报废泄漏电解液应清除干净、或遥控器出现显示屏上乱码“死机”操作失灵现象，应按遥控器上的“复位键”或用类似牙签的物件，将遥控器的“复位按键”按一下进行复位后，再重新开启空调观察，或将遥控器的电池取出5分钟以上后，再装入遥控器的电池仓内一试。

④如果用户按以上原因进行排查后，故障依旧，联系空调售后服务报修•空调室内机出现漏水故障原因？故障排查与操作办法：空调室内机漏水故障处理办法：观察室内机漏水故障产生具体部位后进行处理■ 室内机漏水故障原因有：①在天气温度过高和空气湿度接近饱和的情况时，是否将空调遥控器设定为除湿模式运行，因在除湿运行时，空调达到设定温度后会按照电脑程序在低于设定温度以下间歇开机10分钟和停机6分钟继续除湿（实际上相当于深度制冷运转，在空气湿度高于70度以上时，就会使室内机里产生大量的冷凝水）建议用户将空调设定制冷模式运行改善凝露过多造成的滴水故障；②用户反映导风板上向下滴水时，建议用户将空调设定导风板角度在水平或以上送风为宜。

③其他原因：用户将排水管是否在室内或室外部分由压瘪或弯曲上翘现象不能正常排水。

4. 选择功能..................................................................................................................................................4-1 4.1 室内机（RPF(l) – FSG(E)，RPK-FSGM 和 RPC-FSG1 系列）.......................................................4-1 4.1.1遥控器开/关功能........................................................................................................................4-1 4.1.2电源开/关功能1（电源接通时的自动功能）..........................................................................4-5 4.1.3电源开/关功能2（电源故障后的重启功能）..........................................................................4-5 4.1.4室内电热调控器的控制..............................................................................................................4-6 4.1.5遥控温度传感器的操作控制......................................................................................................4-7 4.1.6外部输入改变制冷或制热模式的设定（水平信号输入）......................................................4-7 4.1.7截取操作信号..............................................................................................................................4-8 4.2 室内机（RPI-FSG1，RCI-FSG1 和 RCD-FSG1 系列） ...................................................................4-11 4.2.1室内机印刷电路板输入输出设置..............................................................................................4-11 4.2.2温度遥控器功能..........................................................................................................................4-13 4.2.3遥控器开/关功能.........................................................................................................................4-14 4.2.4电源开/关功能1（电源接通时的自动功能）..........................................................................4-18 4.2.5电源开/关功能2（电源故障后的重启功能）..........................................................................4-18 4.2.6室内电热调控器的控制..............................................................................................................4-19 4.2.7遥控温度传感器的操作控制......................................................................................................4-20 4.2.8外部输入改变制冷或制热模式的设定......................................................................................4-20 4.2.9截取操作信号..............................................................................................................................4-21 4.3 室外机...................................................................................................................................................4-25 4.3.1指令.............................................................................................................................................4-27 4.3.2强制停机......................................................................................................................................4-27 4.3.3固定运行模式..............................................................................................................................4-28 4.3.4霜冻传感器..................................................................................................................................4-28 4.3.5除霜条件的改变..........................................................................................................................4-29 4.3.6制热模式下温控关闭时对室内风机的控制..............................................................................4-30 4.3.7各个季节里的制热操作..............................................................................................................4-30 4.3.8各个季节里的制冷操作..............................................................................................................4-31 4.3.9夜间转换（低噪音）运行..........................................................................................................4-32 4.3.10截取室外机印刷电路板的信号..................................................................................................4-334.4遥控器PC-2H2.....................................................................................................................................4-35 4.4.1零件名称......................................................................................................................................4-35 4.4.2同步运行......................................................................................................................................4-36 4.4.3双遥控器操作系统......................................................................................................................4-38 4.4.4功能设定选择..............................................................................................................................4-39 4.4.5遥控器功能选择..........................................................................................................................4-42 4.4.6 寻址（ADDS）和制冷剂循环编号（RN）显示 .....................................................................4-474.5无线遥控器PC-LH3 ............................................................................................................................4-48 4.5.1零件名称......................................................................................................................................4-48 4.5.2室内机组并列安装的识别..........................................................................................................4-49 4.5.3同步运行......................................................................................................................................4-50 4.5.4紧急操作......................................................................................................................................4-52 4.5.5选择功能设定..............................................................................................................................4-53 4.5.6无线遥控器的选择功能..............................................................................................................4-54 4.6七日时控器，PSC-3T..........................................................................................................................4-55 4.7中央控制器PSC-3S1 ...........................................................................................................................4-57 4.7.1零件名称......................................................................................................................................4-57 4.7.2系统.............................................................................................................................................4-58 4.7.3中央控制器的操作步骤..............................................................................................................4-60选择功能(4.1室内机) 4.选择功能4.1室内机（RPI(I) – FSG(E)，RPK-FSGM和RPC-FSG1系列）4.1.1遥控器开/关功能该功能提供远程自动停机或系统启动的控制。

IOD-40249/2016OPERATION MANUALMODELSAir Handling UnitFXTQ09TAVJUA FXTQ09TAVJUD FXTQ12TAVJUA FXTQ12TAVJUD FXTQ18TAVJUA FXTQ18TAVJUD FXTQ24TAVJUA FXTQ24TAVJUD FXTQ30TAVJUA FXTQ30TAVJUD FXTQ36TAVJUA FXTQ36TAVJUD FXTQ42TAVJUA FXTQ42TAVJUD FXTQ48TAVJUA FXTQ48TAVJUD FXTQ54TAVJUA FXTQ54TAVJUD FXTQ60TAVJUAFXTQ60TAVJUDSYSTEM Inverter Air ConditionersRead these instructions carefully before installation. Keep this manual in a handy place for future reference. This manual should be left with the equipment owner.Lire soigneusement ces instructions avant l’installation.Conserver ce manuel à portée de main pour référence ultérieure. Ce manuel doit être donnéau propriétaire de l’équipement.Lea cuidadosamente estas instrucciones antes de instalar.Guarde este manual en un lugar a mano para leer en caso de tener alguna duda. Este manual debe permanecer con el propietario del equipo.•Do not allow children to play on or around the unit to prevent injury.•The heat exchanger fins are sharp enough to cut. To avoid injury, wear gloves or cover the fins while work-ing around them.•Do not put a finger or other objects into the air inlet or air outlet. The fan is rotating at high speed and will cause injury.•Check the unit foundation for damage on a continu-ous basis, especially if it has been in use for a long time. If left in a damaged condition the unit may cause injury.•Placing a flower vase or other containers with water or other liquids on the unit could cause a shock or fire if a spill occurs.•Never touch the internal parts of the controller. Do not remove the front panel because some parts in-side are dangerous to touch. To check and adjustinternal parts, contact your dealer.•Do not use the heat pump for any other purposes other than comfort cooling or heating. Do not use the unit for cooling precision instruments, food, plants, animals or works of art.•Do not place items under the indoor unit as they may be damaged by condensates that may form if the humidity is above 80% or if the drain outlet gets blocked.•Before cleaning, stop the operation of the unit by turning the power off or by pulling the supply cord out from its receptacle. Otherwise, an electric shock and injury may result.•Do not wash the heat pump with excessive water. An electric shock or fire may result.•Avoid placing the controller in a spot splashed with water. Water entering the controller may cause an electric shock or damage the internal electronic parts.•Do not operate the heat pump when using a room fumigation type of insecticide. Failure to observe this could cause the chemicals to be deposited in the unit and can endanger the health of those who are hyper-sensitive to chemicals.•The appliance is not intended for use by young chil-dren or infirm persons without supervision.•The remote controller should be kept away from chil-dren so they cannot play with it.•Consult with the installation contractor for cleaning.•Incorrect cleaning of the inside of the heat pump could make the plastic parts break and cause water leakage or electric shock.•Do not touch the air inlet or aluminum fin of the heat pump as they can cut and cause injury.•Do not place objects in direct proximity of the out-side unit. Do not let leaves and other debris accumu-late around the unit. Leaves are a hotbed for small animals which can enter the unit. Once inside the unit, animals can cause the unit to malfunction and cause smoke or fire when they make contact withelectrical parts.•Never press the button of the remote controller with a hard, pointed object. The remote controller may be damaged.•Never pull or twist the electric wire of the remote con-troller. It may cause the unit to malfunction.•Do not place appliances that produce open flames in places that are exposed to the air flow of the unit or under the indoor unit. It may cause incomplete com-bustion or deformation of the unit due to the heat.•Do not expose the controller to direct sunlight. The LCD display can become discolored and may fail to display the data.•Do not wipe the controller operation panel with ben-zene, thinner, chemical dust cloth, etc. The panel may get discolored or the coating can peel off. If it is heavily dirty, soak a cloth in water-diluted neutral detergent, squeeze it well and wipe the panel clean.Then wipe it with another dry cloth.•Dismantling of the unit, disposal of the refrigerant, oil, and additional parts, should be done in accor-dance with the relevant local, state, and national regu-lations.•Operate the heat pump in a sufficiently ventilated area and not surrounded by obstacles. Do not use the heat pump in the following places.a.Places with a mist of mineral oil, such as cuttingoil.b.Locations such as coastal areas where there is alot of salt in the air.c.Locations such as hot springs where there is a lotof sulfur in the air.d.Locations such as factories where the power volt-age varies a lot.e.In cars, boats, and other vehicles.f.Locations such as kitchens where oil may splat-ter or where there is steam in the air.g.Locations where equipment produces electromag-netic waves.h.Places with an acid or alkaline mist.i.Places where fallen leaves can accumulate orwhere weeds can grow.•Do not attempt to do electrical work or grounding work, unless you are licensed to do so. Consult with your dealer for electrical work and grounding work.•Pay attention to operating sound. Be sure to use the following places:a.Places that can sufficiently withstand the weightof the heat pump yet can suppress the operat-ing sound and vibration of the heat pump.b.Places where warm air from the air outlet of theoutside unit or the operating sound of the out-side unit does not annoy neighbors.•Consult your dealer if the heat pump in operation gen-erates unusual noise.•Make sure that the drainpipe is installed properly to drain water. If no water is discharged from the drain-pipe while the heat pump is in the cooling mode, the drainpipe may be clogged with dust or dirt and water leakage from the indoor unit may occur. Stop oper-ating the heat pump and contact your dealer.2.3.MAINTENANCE•Only a qualified person is allowed to perform mainte-nance without daily maintenance.•Before touching any of the connection wirings, be sure to turn off all power supply switches.•For installation of optional parts, only a qualifited person is allowed to do so.Be sure to use optional parts specified by the manufac-turer. Installation in your own manner may result in wa-ter leakage, electric shock or fire.•Do not use flammable material (e.g. hair-spray or insec-ticide) near the product.•Only proceed with the unit cleaning after stopping the operation and turning the power supply off.Failure to do so may result in electric shocks or injury.•Do not wash the heat pump or air handler with water.Failure to do so may result in an electric shock.•Consult with installation contractor for cleaning the inside of the air handler.Wrong cleaning procedures may break plastic parts or cause water leakage or electric shock.•Use a stable prep stand.Pay extra attention when cleaning the air handler. (Maintenance and inspection)•Clean the drain pan periodically. The drain pipes clogged with dust will cause water leakage.•For cleaning, consult with your Daikin dealer. (Before each season when cooling or heating is required, clean the air handler.)•If the area around the indoor unit is very dusty, use a dust proof cover (local procurement).(Cleaning the inside of the indoor unit)•It is necessary to clean the inside of the indoor unit peri-odically.Since the cleaning requires special technologies, requesta Daikin dealer to clean them.(Electric heater replacement interval)•The electric heater should be replaced every ten years.This replacement interval is a guideline for ensuring safe and trouble-free operation of the product for many years. (Cleaning the air filter)•The air filter is an optional accessory.EXPLANATION:•Removing the air filter except when cleaning the air han-dler may result in accidents.•Replace the filter when one of the following messages displayed on the bottom of remote controller screen.- Time to clean filter & element- Time to clean filter•If using the air handler under very dusty environment, increase the frequency of air filter cleaning.•Reset the filter sign on main menu of remote controller.Refer an operation manual of remote controller for de-tail.•Consult dealer to change filter setting time to display fil-ter change alarm on remote controller screen. (The de-fault factory setting is 2500 hours.)•There are the following time, display pattern: 1250, 2500, 5000, 10000.•Do not allow the indoor unit to get wet as it may cause an electric shock or fire._______________________________________________ 4. PRECAUTIONSIf the following phenomenon occurs, contact your dealer.•Any abnormalities in the operation of the heat pump or air handler such as smoke or fire could result in severe injury or death.Turn off the power and contact your dealer immediately for instructions._______________________________________________ Phenomenon•The unit may operate with the airflow rate at high speed even though the airflow rate was set to low speed using the remote controller during ELECTRIC HEATER opera-tion.Take the following actions before contact.Check to see if an optional electric heater is installed.The unit operates with the airflow rate at high speed dur-ing ELECTRIC HEATER operation regardless of the re-mote controller airflow rate setting or display.Phenomenon•The safety devices such as fuse, breaker, ground fault interrupter, etc. often operate or operations of the opera-tion switch are unstable.Take the following actions before contact.Turn off the switch.•If the ON/OFF switch does not properly work, Take the following actions before contact.Turn off the main power switch.Phenomenon•Water leaks out from the air handle r.Take the following actions before contact.Stop the operation.Phenomenon•Error message is displayed. See the remote controller operation manual for details.Inform the dealer of the details being displayed on the remote controller.。

二、维修注意事项（部分控制元件故障分析）1、室内部分①环境感温包开路：整机制冷时不启动或启动一下就停机；制热时工作正常，且一直是高频运转。

②管温包开路是：分体机和灯箱柜机，容易出现工作6分钟至10分钟就停外机，液晶显示的会显示E2并停止室外机。

③管温包短路时：制冷是无防冻结保护外机不启动；制热是无防高温保护，整机停止工作。

④所有温控元件阻值有偏差时，频率会一直出现高频不降频或是一直低频不上升。

（有些温控元件在不通电的情况下阻值正常，最好是通电检查。

）三、室外部分①压缩机过热保护器，当其出现保护时:停室外机，外机主板指示灯闪烁且长时间开不了机。

②室外化霜管温头开路时：制冷正常：制热时会45分钟就化霜一次，10分钟解除化霜，反复循环。

③室外化霜管温短路时：制冷制热均不会工作。

④室外机环境感温包开路时：对空调机运转不受影响。

⑤室外机环境感温包短路时：制冷时不受影响，制热时空调一直低频运转，频率不上升。

⑥压缩机排气口感温包开路时，空调机运转一直处于高频（不会降频）。

⑦压缩机排气口感温包短路时：制冷制热均开不起机。

⑧变频器（模块）的故障判断及更换a、开机后测量p+、N－之间是否有300V左右的直流电压b、检查+5V与+12V输出是否正常，可以在室外机找点测量c、如（a）和（b）正常之后，检测U、V、W三相是否有平衡交流电输出。

（在检测U、V、W之间电压时，最好是将压缩机连线拆下检查）d、如（a）、（b）、（c）都正常之后，检查压缩机线圈阻值是否正常。

（压缩机三个端子阻值是否相等，阻值应为1～3欧姆。

）e、模块更换及安装时，必须要涂散热膏，螺丝要均衡拧紧，紧贴散热膏，否则温度过高，出现模块频繁保护，压缩机频繁开停。

f、室外主控板与模块之间的10根通讯线一定要小心插紧，控制器上的+5V与+12V 均都由模块输出。

10根通讯线其中三根分别为：地、+5V、+12V另外7根是数据线，需用示波器方能检测。

⑨室外机两个整流桥，一个为220V输入，输出300V直流至模块p+与N－两端：另一个是半波整流滤波作用。