11
53-22130A100
131 EISENHOWER LANE NORTH
LOMBARD, ILLINOIS 60148-5413
630-268-0010 / 1-800-251-2408
ELECTRONIC CLIMATE CONTROL
INTELLITEC
Trouble Shooting
III.
"ON" indicator is on but the A/C compressor never comes on in either the LOW COOL,
HIGH COOL or AUTO COOL mode, even when the set point control is set to its lowest (cool)
position. In the HEAT mode, the furnace works properly in conjunction with the set
point control.
A.
Slide the test switch on the Control Module towards J2. Front compressor and high fan should
turn on. If not:
1.
Check to make sure that the leads on PC2 are connected to their corresponding function
at the front A/C unit. The wire colors may or may not match. It is likely that the "common"
and "high fan" leads are reversed.
2.
Check the continuity of the "Comp Relay" lead between the Control Module and the front
A/C unit.
B.
Slide the test switch on the Control Module towards J3. Rear compressor and high fan should
turn on. If not:
1.
Check to make sure that the leads on PC3 are connected to their corresponding function at
the rear A/C unit. The wire colors may or may not match. It is likely that the "common"
and "high fan" leads are reversed.
2.
Check the continuity of the "Comp Relay" lead between the Control Module and the rear
A/C unit.
C.
Check to make sure that the connector, PC1B, from the Current Sensor is plugged into J1 pins
1 and 2 and that the 120 VAC supply lead to the 30 Amp breaker in the distribution panel
passes through the hole in the Current Sensor. If OK then:
1.
Unplug the Current Sensor from the Control Module and measure the resistance across the
leads to the Current Sensor. The resistance should be approximately 40 Ohms. If not:
a. Replace the Current Sensor.
