Applicable Systems
Carrier ComfortLink Thermostat/Controller
Symptoms
Discharge temperature fault. The discharge temperature sensor reading is abnormal.
Possible Causes
- Discharge sensor element failure
- Sensor exposed to temperature beyond its range
Troubleshooting Steps
- Step 1: Check the discharge sensor resistance and wiring
Resistance is abnormal or wiring is damaged - Step 2: Replace the discharge temperature sensor
New sensor reads correctly
How to Reset
To reset: Replace the faulty sensor and reset the controller.
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Source: Carrier HVAC Troubleshooting Guide, Carrier Corporation
Category: HVAC Residential
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