Operating instructions

12
9.MECHANICAL CONTROL
Fan runs; but not on all speeds
10.ELECTRONIC & BIMETAL CONTROL
Fan runs; but not on all speeds
11.MECHANICAL, ELECTRONIC & BIMETAL
CONTROL WITH AIR DISTRIBUTION BOX
Evaporator freezes up.
12.ELECTRONIC & BIMETAL
CONTROL WITH DUCT IN CEILING
Evaporator freezes up.
13.MECHANICAL, ELECTRONIC & BIMETAL
CONTROL WITH AIR DISTRIBUTION BOX
Insufficient cooling or heating; compressor runs
constantly.
14.ELECTRONIC & BIMETAL CONTROL
WITH DUCT IN CEILING.
Insufficient cooling or heating; compressor runs
constantly.
15.MECHANICAL CONTROL
Unit operators in wrong mode (cool instead of heat
pump or reversed)
16.ELECTRONIC & BIMETAL CONTROL
Unit operate in wrong mode (cool instead of heat
pump or reversed)
17.MECHANICAL, ELECTRONIC & BIMETAL RELAY
CONTROL WITH AIR DISTRIBUTION BOX:
Insufficient cooling; compressor cycles off occasion-
ally.
18.ELECTRONIC & BIMETAL CONTROL WITH DUCT
IN CEILING: Insufficient cooling; compressor
cycles off occasionally
Selector Switch 8E 63
Wiring 5B 27
Motor 1C 34
Wiring 11B 30
Motor 1C 34
Thermostat 9E/B-9E/C 64
Relay Board 12E 71
Cable Assembly 10E 70
Ambient Temperature 12C/A 44
Air Flow Obstruction 10C 38
Low Charge 14C 47
Capillary Tube Blockage 14C 47
Evaporator Blockage 14C 47
Ambient Temperature 12C/A 44
Air Distribution System 11C 38
Low Charge 14C 47
Capillary Tube Blockage 14C 47
Evaporator Blockage 14C 47
Air Flow Obstruction 10C 38
Heat Gain/Heat Loss 12C/B 44
Refrigerant System 13C 45
Compressor 5C 36
Air Distribution System 11C 38
Heat Gain/Heat Loss 12C/B 44
Refrigerant System 13C 45
Compressor 5C 36
Operating Instructions 4E 60
Thermostat 9E/A 64
Changeover Thermostat 11E 71
Relay, Double Throw 13E 72
Reversing Valve 14E 73
Operating Instructions 5E/6E 60-62
Thermostat 9E/B-9E/C 64
Changeover Thermostat 11E 71
Relay, Double Throw 13E 72
Reversing Valve 14E 73
Thermostat 9E 64
Air Flow Obstruction 10C 38
Air Distribution System 11C 38
Thermostat 9EB/9EC 64
Relay Board 12E 71
DUO-THERM ROOF-MOUNTED HEAT PUMPS . . . Continued
SYMPTOM CAUSE REFER TO PAGE