Operating instructions

2
DUO-THERM COMFORT CONTROL CENTER SYSTEMS . . . Continued
SYMPTOM CAUSE REFER TO PAGE
(Roof Mounted Air Conditioner Sec. continued)
11. Air distribution box unit: Insufficient cooling with
reduced air output.
12. Duct in ceiling unit: Insufficient cooling with
reduced air output.
13. Excessive cooling.
14. Noisy Operation.
ROOF MOUNTED HEAT PUMP SECTION:
1. Unit does not run: No fan, no compressor.
2. Fan operates: Compressor will not come on (does
not "hum".
3. Fan operates: Compressor tries to start, cycles
"OFF" and "hums" again, or blows circuit.
4. Fan operates: compressor runs for a short time,
cycles "OFF", cycles back "ON".
Air Flow Obstruction 10C 38
Blower Wheel 12C/E 44
Air Flow Obstruction 10C 38
Air Distribution System 11C 38
Remote sensor 4G/5 129
AC Power Module Board 4G/6 130
Comfort Control Center 4G 127
Loose Parts 12C/C 44
Fan Blades Hitting 12C/E 44
Tubing Vibration 12C/D 44
Configuration 2G 106
Operation 1G 100
AC Voltage 1B 26
DC Voltage 3G 127
Breaker 3B 26
Fuse 4G/7 133
Cable Assembly 4G/2 128
Comfort Control Center 4G 127
AC Power Module Board 4G/6 130
Operation 1G 100
Cable Assembly 4G/2 128
Compressor 5C 36
AC Power Module Board 4G/6 130
Comfort Control Center 4G 127
AC Voltage 1B 26
PTCR 4C 36
Start or Run capacitor 2C/3C 35/36
Overload Protector 6C 37
Compressor 5C 36
Short Cycle 9C 38
Air Flow Obstruction 10C 38
Air Distribution System 11C 38
Compressor 5C 36
Refrigerant System 13C 45