Incorrectly Wired Module Codes
Depending on the system configuration, some Alert flash codes may not be active. The presence of safety switches affects how the system alerts are displayed by the module.
Incorrectly wiring the diagnostic module will cause false LED codes. The Incorrectly Wired Module Troubleshooting chart describes LED operation when the module is incorrectly wired and what troubleshooting action is required to correct the problem.
Incorrectly Wired Module Troubleshooting
| Incorrectly Wired Module Indication | Recommended Troubleshooting Action |
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| Green LED is not on, module does not | Determine if both R and C module terminals are connected. See “24 VAC Power |
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| power up. | Wiring” section for R and C wiring. |
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| Green LED intermittent, module powers | Determine if R and Y terminals are wired in reverse. See “24 VAC Power Wiring” earlier |
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| up only when the compressor runs. | in this section for R and C wiring. |
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| Trip LED is on but the system and the | Verify that the Y terminal is connected to the 24 VAC at the contactor coil. |
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| compressor check OK. |
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| Trip LED and Alert LED are flashing | Verify that the R and C terminals are connected. See “24 VAC Power Wiring” earlier in |
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| together. | this section for R and C wiring. |
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| Alert Flash Code 3 (Compressor Short | Verify that the Y terminal is connect to the 24 VAC at the contactor coil. |
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| Cycling) is displayed incorrectly. |
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| Alert Flash Codes 5, 6 or 7 (Open Circuit, | Check that the compressor run and start wires are through the module’s current |
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| Open Start Circuit or Open Run Circuit) | sensing holes. Verify that the Y terminal is connected to the 24 VAC at the contactor |
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| are displayed incorrectly. | coil. |
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| Alert Flash Code 6 (Open Start Circuit) is | Check that the compressor run and start wires are routed through the correct module |
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| displayed for Code 7 (Open Run Circuit) or | sensing holes. |
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| vice versa. |
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| Alert Flash Code 8 (Welded Contactor) is | Determine if the module’s Y terminal is connected. Verify that the Y terminal is |
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| displayed incorrectly. | connected to the 24 VAC at the contactor coil. |
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SYSTEM MAINTENANCE
■Leaves and other large obstructions should be removed from the heat pump surfaces without damaging the fin surface of the coil.
■Routinely clean or change the indoor air filter. Should the indoor coil become dirty, thus restricting airflow, call a qualified service person to clean the coil surface.
■An annual inspection by a qualified person should be performed to ensure continued quality performance.
ASSISTANCE OR SERVICE
If you need further assistance, you can write to the below address with any questions or concerns:
Whirlpool® Home Cooling and Heating 14610 Breakers Drive Jacksonville, FL 32258
Please include a daytime phone number in your correspondence.
Accessories
To order accessories contact your Whirlpool® Home Cooling and Heating dealer.
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