TROUBLESHOOTING (Tables 6-8, and Fig. 19)
WARNING
Be sure to check for broken wires or loose cable lugs before troubleshooting system.
Table 6 — Service Indicators
LAMP STATUS | INDICATION | CORRECTION ACTION |
|
| Check the TH1 thermistor for correct resistance. |
1 Flash | Faulty TH1 Sensor | Check for proper connection. |
|
| Replace thermistor if necessary. |
|
| Check the TH2 thermistor for correct resistance. |
2 Flashes | Faulty TH2 Sensor | Check for proper connection. |
|
| Replace thermistor if necessary. |
|
| Check system pressures. |
3 Flashes | Low Pressure | Check refrigerant charge. |
|
| Check thermistors (TH1 and TH2) for correct resistance. |
|
| Check system pressures. |
4 Flashes | High Pressure | Check refrigerant charge. |
|
| Check thermistors (TH1 and TH2) for correct resistance. |
5 Flashes | Low Voltage | Check operating voltage. |
| ||
|
| Check electrical connections. |
6 Flashes | High Voltage | Check operating voltage. |
| ||
|
| Check electrical connections. |
|
|
|
OPERATION LED.
INDICATES ERROR
POWER LED.
OFF WHEN SYSTEM IS OPERATING AND FLASHES WHEN SYSTEM IS IN ERROR.
(DOES NOT INDICATE ERROR CODE)
CLEAN FILTER INDICATOR
FLASHED AFTER 250 HOURS
OF OPERATION
Fig. 19— Indicator Lights
12
