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B. DETAILED TROUBLESHOOTING
FOR COMFORT CONTROL
CENTER (CCC) CONTROLS
We will now start electrically troubleshooting Comfort Con-
trol Center (CCC) controlled units. The best place to begin
is at the power source.
1. POWER SOURCE
If the compressor or fan fails to operate, it is probably not
receiving power. Be sure the power cord is plugged in and
no fuses or breakers are tripped.
Note: Many customers use extremely long power cords
that are undersized. If possible, ask the owner to hook up
the RV just like it was when the problem occurred.
FIG. 2
Make note of the wire size and length of wire. Compare it to
the chart for wire sizing.
CURRENT
WIRE SIZE
IN
AMPS
16
14
LENGTH IN FEET
5
47
76
10
38
15
25
20
12
10
8
6
121
192
216
486
60
96
153
243
40
64
102
162
30
48
76
121
FIG. 3
For normal operation of the unit, AC voltage
must stay between 103.5 VAC and 126.5 VAC.
Operation of the unit outside of this voltage
range can result in component damage.
To determine if power is reaching the air conditioner, the
inside plastic air diffuser box must be removed. The junction
box will now be exposed. Remove the cover from the junc-
tion box to gain access to the connection between the RV
and the unit wires (FIG. 3). Check with a voltmeter for volt-
age at the connections of the unit to RV wires. USE CAU-
TION as 115 volts may be present.
If no voltage is present, the problem is in the coach wiring or
breaker/fuse box.
2. CABLE ASSEMBLY
A flat control cable must be routed from the unit to the Com-
fort Control Center. It must be 26 gauge, stranded copper
wire, four (4) conductor (yellow, green, red, and black). The
cable must be terminated with a four (4) position telephone
RJ-11 Connector.
Note: Do not use a pre-made telephone extension cable.
The order of the connectors is reversed and will cause a
failure of the system.
FIG. 4
2
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Troubleshooting
