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05019 CHECK CDCON2 COIL
• ACTIVATION: Condenser fan motor contactor (CDCON2) 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 CDCON2
a. Inspect condenser fan contactor coil and terminals. Verify there is no damage to coil, and no
damage or corrosion at terminals.
b. Check contactor coil resistance. Refer to Figure 2.9 for correct electrical values. Cannot be
opened (infinite ohms), shorted (Zero Ohms) or shorted to ground.
c. Check amp draw of coil. Refer to Figure 2.9 for correct electrical values. Use ammeter.
2. Check CDCON2 Current Draw
a. Use Component Test Mode to energize CDCON2. (Refer to Section 5.2.4.) Verify Current Draw
on Component Test Mode Screen. Refer to Figure 2.9 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.
d. Use Component Test Mode to test actual current draw of the circuit. (Refer to Section 5.2.4.)
Refer to Figure 2.9 for values. View current draw in Component Test Mode screen.
e. 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.
3. Check PSCON1 and PSCON2 - Check for loose wires or open contact. Verify there is no physical dam-
age, and no damage, moisture, or corrosion in connectors.
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