Dometic 3109228.001 User Manual

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

Dometic 3109228.001 Specifications

General

Cooling Capacity	13, 500 BTU/h
Hertz	60 Hz
Operating Current	12.5 A
Model	3109228.001
Voltage	115 V AC
Power Supply	115 V AC

Summary

A. QUICK-CHECK TROUBLE-SHOOTING FOR COMFORT CONTROL CENTER (CCC) CONTROLS

1. Air Conditioner/Heat Pump turned on - No display

Troubleshooting steps for no display on the AC/Heat Pump control. Includes reset, DC voltage, cable, and module checks.

2. Air Conditioner/Heat Pump turned on – Has display, improper operation

Troubleshooting steps for improper operation with display active. Covers power, reset, configuration, wiring, and module checks.

3. Air Conditioner/Heat Pump turned on - Fan runs, No compressor operation

Diagnosing issues when the fan runs but the compressor does not. Checks include start relay, capacitors, controls, and wiring.

4. Air Conditioner/Heat Pump turned on - Compressor runs, No fan operation

Troubleshooting when the compressor runs but the fan does not. Focuses on fan capacitor, motor, wiring, and control modules.

5. Heat Pump turned on - Compressor runs and fan runs, No heat output

Diagnosing lack of heat output when compressor and fan are operational. Checks involve reversing valve, wiring, and control modules.

TOOLS REQUIRED

B. DETAILED TROUBLESHOOTING FOR COMFORT CONTROL CENTER (CCC) CONTROLS

1. POWER SOURCE

Ensuring adequate AC power supply to the unit, checking cords, fuses, breakers, and voltage at the junction box.

2. CABLE ASSEMBLY

Details on the control cable, its specifications, proper termination with RJ-11 connectors, and avoiding extension cables.

3. COMPRESSOR

Electrical testing of the compressor, including overload checks, continuity between terminals, and shorts to casing.

4. CAPACITORS

Testing compressor and fan/blower capacitors for defects like bulging, cracking, or open/shorted circuits.

5. MOTORS

Testing motor windings for continuity and shorts, and using an ammeter to check operation against model plate ratings.

6. REMOTE SENSOR

Guidance on selecting remote sensor locations and testing sensor resistance against temperature charts.

7. WIRING

Identifying and correcting electrical shorts or component failures caused by mis-wiring or loose terminals.

8. AC POWER MODULE

Diagnosis and replacement of the AC power module board, checking fuses, configuration, and voltage inputs.

9. REVERSING VALVE

Testing the reversing valve solenoid for continuity and checking refrigerant line temperature for proper operation.

10. PTCR DEVICE

Checking the PTCR device for continuity and amp draw to determine if it has replaced the start relay/capacitor.

11. HEAT STRIP

Testing the heat strip for continuity across terminals to identify defective fuse links or heating elements.

12. COLD CONTROL

Testing the cold (freeze) control sensor resistance against temperature charts for proper operation.

13. AMBIENT SENSOR

Checking the ambient sensor resistance against temperature charts for accurate outside air temperature readings.

14. CONFIGURATION

Setting dip switches on the AC power module for component configuration and system operation.

15. COMFORT CONTROL CENTER

Checking the Comfort Control Center for proper DC voltage and performing a system reset for configuration changes.

16. SYSTEM RESET

Procedure for performing a system reset on the Comfort Control Center to recognize updated configuration settings.

17. DC VOLTAGE

Verifying DC voltage supply to the electronic control box and checking output voltage at the telephone wall jack.