Applicable Systems
RTAC 200
Symptoms
Humidity sensor fault. The controller cannot read the humidity level correctly.
Possible Causes
- Humidity sensor element failure
- Sensor wiring damaged or disconnected
Troubleshooting Steps
- Step 1: Check the sensor output at the controller
Reading is out of range or absent - Step 2: Replace the humidity sensor
New sensor reads correctly
How to Reset
To reset: Replace the faulty sensor and power-cycle the controller.
Source: Trane HVAC Service Manual, Trane Inc.
Category: HVAC Residential