1
AIR CONDITIONER
BULLETIN A29/2A
JANUARY 2002
INTRODUCTION
The Comfort Control Center control system can be used to
operate the following Duo-Therm Units:
Roof Top Air Conditioners
Roof Top Heat Pumps
Basement Air Conditioners
Basement Heat Pumps
Dual Basement Air Conditioners
Dual Basement Heat Pumps
Other Manufacturer’s Furnaces
A majority of air conditioner and heat pump problems are
electrical and can be found very easily.
To find a problem in the electrical system, you need to be
able to diagnose the following:
1. Power Source 10. PTCR Device
2. Cable Assembly 11. Heat Strip
3. Compressor 12. Cold Control
4. Capacitors 13. Ambient Sensor
5. Motors 14. Configuration
6. Remote Sensor 15. Comfort Control Center
7. Wiring 16. System Reset
8. AC Power Module 17. DC Voltage
9. Reversing Valve
TOOLS REQUIRED
The air conditioner can be checked with a voltmeter, ohm-
meter, clamp-on ammeters and two good thermometers.
Some clamp-on ammeters can read voltage and ohms.
TROUBLESHOOTING
for the
5 BUTTON 3109228.001
COMFORT CONTROL
CENTER SYSTEM
A. QUICK-CHECK TROUBLE-
SHOOTING FOR COMFORT
CONTROL CENTER (CCC)
CONTROLS
For detailed troubleshooting, refer to sec-
tion noted.
1. Air Conditioner/Heat Pump turned on –
No display
a. Reset - Sec. B15
b. DC Voltage - Sec. B17
c. Cable Assembly - Sec. B2
d. AC Control Module - Sec. B8
e. Comfort Control Center (CCC) - Sec. B15
2. Air Conditioner/Heat Pump turned on –
Has display, improper operation
a. Power Source - Sec. B1
b. Reset - Sec. B16
c. Configuration - Sec. B14
d. Wiring - Sec. B7
e. AC Control Module - Sec. B8
f. Comfort Control Center (CCC) - Sec. B15
3. Air Conditioner/Heat Pump turned on –
Fan runs, No compressor operation
a. Start Relay/PTCR - Sec. B10
b. Start Capacitor - Sec. B5
c. Fan/Run Capacitor - Sec. B4
d. Cold Control - AC Only, Sec. B12
e. Outdoor Ambient Sensor (HP) - Sec. B13
f. Compressor - Sec. B3
g. Wiring - Sec. B7
h. Comfort Control Center - Sec. B15
i. AC Control Module - Sec. B8
4. Air Conditioner/Heat Pump turned on – Com-
pressor runs, No fan operation
a. Fan/Run Capacitor - Sec. B4
b. Motor - Sec. B5
c. Wiring - Sec. B7
d. Comfort Control Center (CCC) - Sec. B15
e. AC Control Module - Sec. B8
5. Heat Pump turned on – Compressor runs and
fan runs, No heat output
a. Reversing Valve - Sec. B9
b. Wiring - Sec. B7
c. AC Control Module - Sec. B8
Form No. 3307835.003 1/02
(French 3307836.001)
©2002 Dometic Corporation
LaGrange, IN 46761
FIG. 1
Manual Compliments of
Northwest RV Supply
Printed From
http://www.nwrvsupply.com
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