Applicable Systems
RTAC 200
Symptoms
Fire alarm interface fault. The fire alarm interlock signal is not functioning correctly.
Possible Causes
- Fire alarm interface relay failure
- Interlock wiring damaged or disconnected
Troubleshooting Steps
- Step 1: Check the fire alarm interface wiring
Wiring is disconnected or damaged - Step 2: Test the interface relay operation
Relay is not operating
How to Reset
To reset: Fix the wiring or relay, then reset the controller.
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Source: Trane HVAC Service Manual, Trane Inc.
Category: HVAC Residential
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