62-11785 7–30
00094 CHECK COMP CONTACTOR 1
• ACTIVATION: Compressor motor contactor (CCON) circuit is shorted or open.
• UNIT CONTROL: Shutdown and alarm.
• RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off,
then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active
alarm should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1. Check CCON
a. Inspect compressor contactor coil and connector. Verify there is no damage to coil, and no
damage, moisture, or corrosion in connector.
b. Check contactor coil resistance. Refer to Section 2.10 for contactor coil resistance values. Cannot
be open (infinite ohms), shorted (Zero Ohms) or shorted to ground.
2. Check CCON Using Component Test Mode
a. Use Component Test Mode to energize CCON. (Refer to Section 5.3.2). Verify Current Draw on
Component Test Mode Screen. Refer to Section 2.10 for correct electrical values.
b. Check coil voltage between A1 and A2. Verify 12 VDC between A1 & A2.
c. Check resistance at contacts. Verify contacts are closed at L1-T1, L2-T2, L3-T3.
3. Check CCON Wiring - Inspect harness & control box connector pins & terminals. (See wiring schematic
Section 10.3). Verify there is no physical damage to harness, and no damage, moisture, or corrosion in
connectors.
00095 CHECK CDCON1 COIL
• ACTIVATION: Condenser fan motor contactor (CDCON) circuit is shorted or open.
• UNIT CONTROL: Alarm only.
• RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off,
then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active
alarm should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1. Check CDCON
a. Inspect contactor coil and connector. Verify there is no damage to coil, and no damage, moisture,
or corrosion in connector.
b. Check contactor coil resistance. Refer to Section 2.10 for contactor coil resistance values. Cannot
be opened (infinite ohms), shorted (Zero Ohms), or shorted to ground.
2. Check CDCON Using Component Test Mode
a. Use Component Test Mode to energize CDCON. (Refer to Section 5.3.2.) Verify Current Draw on
Component Test Mode Screen. Refer to Section 2.10 for correct electrical values.
b. Check coil voltage between A1 and A2. Verify 12 VDC between A1 & A2.
c. Check resistance at contacts. Verify contacts are closed at L1-T1, L2-T2, L3-T3.
3. Check CDCON Wiring - Inspect harness & control box connector pins & terminals. (See wiring sche-
matic Section 10.3.) Verify there is no physical damage to harness, and no damage, moisture, or corro-
sion in connectors.
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