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10.0 TROUBLE SHOOTING
Components trouble shooting requires opening control box with power on.
Use extreme care while working on this condition. Check nameplate and
this instruction when making wire connections.
WARNING
9.0 OPERATION CHECK-UP
•
Cooling Startup
1. Turn thermostat to OFF and turn power to ON
2. Turn ON thermostat and set as high as possible
3. Turn Fan switch ON and indoor blower should run
4. Turn fan switch to AUTO, system switch to COOL and thermostat tem
perature setting below room temperature.
Unit should run in COOLING mode.
•
Heating Startup
After normal cooling run
1. Turn thermostat switch to HEAT. After unit stops, wait about 5 minutes.
2. Turn thermostat setting above room temperature.
Unit should run in HEATING mode.
After unit has run for a while, check the following:
1. Are fans running properly?
2. Is compressor running correctly?
3. Check refrigerant change.
4. Check duct connection and leaks.
5. Check tubing and sheet metal rattles.
(See Wiring Diagram for electric connection detail.)
8.6 Phase sequence protection:
When connected to the power in the right order but the compressor does not
work, the LED indicator in the PCB board of the condensing unit will flash four
times a cycle. To correct, make sure that the power supply is three phase, then
exchange any two of the power input terminals among the L1, L2 or L3 and this
should correct problem.
NOTE
Cut off the power supply when outdoor appear "POWER PHASE
FAILURE".Swich on power supply again after 10 seconds if correct
wiring connected.
