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FILE NO. SVM-10035
9-6. Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire)
9-6-1. Outdoor unit does not operate.
<Inspection procedure>
(1) Is the voltage between and of the indoor terminal block varied?
(2) Are signals from the indoor unit to the outdoor unit transmitted correctly based upon the following diagram?
NOTE:
Measure the voltage for 2 minutes and 30 seconds after starting the unit.
Normal condition : Voltage varied between AC70 ~ 100V
Abnormal condition : Voltage does not vary.
9-6-2. Outdoor unit stops a while after starting the unit.
<Confirmation procedure>
Select one of 3 cases below and follow the procedure.
(1) The outdoor unit stops between 10 and 20 minutes passed after starting and it takes 10 minutes or more to
restart the unit.
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Terminal block on indoor side
Terminal block
Tester
Red
White
(2) The outdoor unit stops once, it would not operate until the power is turned on again.
(3) The outdoor unit stops between 10 minutes to 1 hour after starting and a check code is indicated on the
remote control. (Check code 03-1E : Refer to Table 9-4-1.)
Measure gas pressure.
Gas shortage
Pipe clogging
Compressor is turned off and on automatically by thermo sensor
(Heat pump Model) or thermostat (Cooling only Model).
Gas has a low circulation.
Gas leak
Refer to 9-6-4 "
Compressor does not operate"
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