Installation guide

Table 8 -- General System Troubleshooting Guide
SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
Powersupply fromoutdoor unit to indoor Checkfor proper connectionof powerat disconnect
unitis not connected.
Power supplyto unit not connected
Unit Fails to Start. (POWER LEDOff).
Fuse blown(POWER LED Off). Resetcircuit breakeror replacelinefuse.
ON/SENDbutton has not been pressed. Press ON/SENDbutton on remote control.
Indoor unitdoes not receive transmitted commands Make sure that nothingis blocking the remote control transmissionto the unit.
Only Indoor Fan The selectedmode is Fan Only,or Coolwhen Check if theremote control isin the desired mode. If not, selectthe
Works when Cooling heatingisdesired, correct mode (refer to User manual).Also note that every 15 minutes
or Heating is Desired. (maximum)the compressorwill be switchedminimallyon for 3 minutes.
NOTE: Indoor fan runs
continuously in Temperatureisset to a value which is Observe the temperature settingon the remote control Also notethat
cooling mode. too high(in Cool mode), each 15 minutes(maximum),the compressorwill be switched on
minimallyfor 3 minutes
Only Indoor Fan Motor Overload safety deviceon compressoris cut out Switch off powerand try againafter one hour.
and Outdoor FanMotor due to high temperature
areWorking. No Cooling Compressor run capacitor is burnt. Replacecompressor runcapacitor
and/or Heating Takes Compressor winding shorted. Replacecompressor
Place,
NoAir Supply at Indoorfan motor is blockedor turns slowly, f. Check voltage. Repairwiring if necessary.
Indoor Unit 2. Check indoor fan wheel if tight onmotor shaft. Tightenif necessary
(Compressor Operates). Indoorfan motor capacitor is burnt Replaceindoor fan motor capacitor.
Indoorfan motor winding is burnt Replaceindoor fan motor.
In Heat mode: Delayedstart for indoorfan motor. Normalsoftware delay (maximumof 20 sec).
Clogged air filters Clean filters.
Lackof refrigerant. Ice formationon the evaporatorcoil. Unitmust be charged (accordingto the nameplate) after localizingthe
Low Capacity. gas leak.
Clogged air filters Clean filters.
In Heat Mode, Only A!C operatingin defrost cycle. Wait 10 minutes (maximum)until the unit resumesnormaloperation.
CompressorRuns,
Outdoorand Indoor
Fan Motorsare Stopped.
Water Accumulatesand Drainpan pipeor hose is cloggedor the spoutof drain Disassembleplastic drain pipe fromspout ofevaporator drain pan.
Overflows from pan isclogged. Flushwith cleanwater
Evaporator Drain Pan.
The unit is in the Auto, (emergency)mode.
Faultyremote control settings
Unit DoesNot Operate in
Desired Mode.
The Unit Receives
Interference from
Other Remote Control
orthe RemoteControl
Interferes with Other
Instruments.
Remotecontrol low battery.
Common InfraredCode
Pushbuttononce to cancelAuto, (emergency)mode.
1. If remote controlsymbols respondtothe commandscorrectly,check
the unit ID Code (Standardor Alternative).Refer to "Changing Unit
ID Code"in the Owner's Manuai
2. If Cool commandsare OK, but Heat symbol is skippedon LCD, refer
to setting the remoteto coolingor heat pumpon the Owner's Manual.
3. Replace remote control.
Replaceremote control batteries.
Modify the RemoteControl IR transmissioncode.
Referto "Changing Unit IDCode" in the Owner's Manual.
IMPORTANT:
The units are designed to work in heat mode only down to -10°C (14°F) outdoor
ambient temperature.
If at starting time outdoor temperature is equal or lower than -10°C (14°F) the unit
will not start and the filter led will flash five (5) times to indicate that low temperature
protection is activated.
Copyright 2006 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at anytime, specifications or designs without noticeand without incurring obligations.
Printed in Israel
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