Troubleshooting: Cooling Sequence of Operation
COOLING SEQUENCE OF OPERATION | |||
POWER ON |
|
| |
| YES | SIGNAL POLARITY REVERSED. | |
| CONTROL WILL CONTINUE TO CALL FOR COOLING | ||
IS POLARITY REVERSED? |
| ||
| IN THIS CONDITION. | ||
|
| ||
|
| STATUS ERROR CODE 5 + 4. | |
NO |
|
| |
| NO | SIGNAL IMPROPER GROUND AT LED. | |
IS THERE | CONTROL WILL CONTINUE TO CALL FOR COOLING | ||
| |||
PROPER GROUND? |
| IN THIS CONDITION. | |
|
| STATUS ERROR CODE 5 + 3. | |
YES |
|
| |
THERMOSTAT CALLS FOR FIRST−STAGE COOL. |
| ||
COMPRESSOR AND CONDENSER FAN |
|
| |
ENERGIZED. |
|
| |
INDOOR BLOWER ENERGIZED ON FIRST STAGE |
| ||
COOL SPEED AFTER 2 SECOND DELAY. |
| ||
| YES | COMPRESSOR AND CONDENSER FAN DE−ENERGIZED. | |
FIRST−STAGE DEMAND FOR COOL SATISFIED? | |||
INDOOR BLOWER DE−ENEGIZED. | |||
|
| ||
NO |
|
| |
THERMOSTAT CALLS FOR SECOND−STAGE COOL. |
| ||
INDOOR BLOWER RAMPS UP TO SECOND−STAGE COOL SPEED. |
| ||
SECOND−STAGE DEMAND FOR COOL SATISFIED? |
| ||
YES |
|
| |
UNIT RETURNS TO FIRST STAGE COOL |
|
| |
Page 61
