Applicable Systems
Carrier ComfortLink Thermostat/Controller
Symptoms
Suction temperature fault. The suction temperature sensor reading is abnormal.
Possible Causes
- Suction sensor element failure
- Sensor wiring damaged by vibration or heat
Troubleshooting Steps
- Step 1: Check the suction sensor resistance
Resistance is out of the expected range - Step 2: Replace the suction 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
Published: 2026-09-29
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