Operating instructions

17
SYMPTOM CAUSE REFER TO PAGE
(MODEL 393XX.XXX SECTION CONTINUED)
4. Fan operates: compressor runs for a short
while, cycles "OFF", cycles back "ON"
5. Compressor runs: no fan
6. Fan runs: but not on all speeds
7. Inside coil freezes
8. Insufficient cooling or heating: compressor runs
constantly
9. Insufficient cooling or heating with reduced air
output
10. Excessive cooling or heating
11. Unit operates in wrong mode (cool instead of
heat pump or reversed)
12. Noisy operation
Short Cycle 9C 38
Air Flow Obstruction 10C 38
Air Distribution System 11C 38
Overload Protector 6C 37
Compressor 5C 36
Refrigerant System 13C 45
Wiring 15B 31
Run Capacitor 2C 35
Motor 1C 34
Thermostat 7F/E 87
Relay 14F/E 98
Relay Board 11F 96
Wiring 15B 31
Motor 1C 34
Cable Assembly 8F/C 95
Thermostat 7F/E 87
Relay Board 11F 96
Operation 3F 74
Air Flow Obstruction 10C 38
Air Distribution System 11C 38
Low Charge 14C 47
Capillary Tube Blockage 14C 47
Reversing Valve 9F 95
Air Flow Obstruction 10C 38
Air Distribution System 11C 38
Heat Gain/Heat Loss 12C/B 44
Refrigerant System 13C 45
Compressor 5C 36
Air Flow Obstruction 10C 38
Air Distribution System 11C 38
Thermostat 7F/E 87
Cable Assembly 8F/C 95
Relay Board 11F 96
Operation 3F 74
Thermostat 7F/E 87
Reversing Valve 9F 95
Loose Parts 12C/C 44
Tubing Vibration 12C/D 44
DUO-THERM BASEMENT AIR CONDITIONERS & HEAT PUMPS . . . Continued