Clutch | |||
Symptom | Condition | Possible Cause | Remedy |
| No attraction. | Wiring normal. | Coil open. | Replace. |
| No attraction even when cooler switch is ON. | Wiring parts open, wiring or connection defective (ground, fuse). | Reconnect or replace open wiring parts. | |
| Switch parts contact defective, malfunction (thermostat, stabilizer relay, cooler switch). | Repair or replace. | ||
| At switch ON, rotor shows movement, and attracts when pushed. | Rotor to stator clearance too large. | Repair or replace. | |
| Slips. | Clutch slips when rotating. | • Battery voltage low. • Oil on clutch face. • Coil layer short. | • Recharge battery. • Clean off oil. • Replace. |
Expansion Valve | |||
Symptom | Condition | Possible Cause | Remedy |
| Valve outlet not cold. | Temperature difference at outlet and inlet cannot be sensed. | • Heat sensitizing tube gas leakage. • Amount of refrigerant in cycle insufficient. | • Replace expansion valve. • Repair gas leakage point and charge refrigerant. |
| Valve inlet cold or frosted. | High pressure piping from receiver outlet feels cold. | Receiver clogged. | Replace. |
| Frosts. | Expansion valve inside clogged. | Replace expansion valve and receiver. | |