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Electronic Control Troubleshooting
19.Cannot Perform Infrared (IR) Communication
T027D
Check the following:
- IR communication disabled by
manual programming.
- Is the IR window on the control
covered or blocked.
- if needed, change electronic
control board.
Check the following:
- low battery on microwand.
- is the IR window covered or
blocked on the control.
- if needed replace the
electronic control.
- is the IR cap properly attached
to the microwand.
Communication
sequence checks
out.
Attempt to
communicate with
the electronic
control from the
microwand.
Aim microwand
closer and try again.
Is there a response of
any kind from the
electronic control?
Does the control
respond?
Does the electronic
control display E:OF
or -C-?
NO
YES
-C-
E:OF
NO
YES
Single and stacked.
Gas and electric heat.
Single and three phase
supply.
T027D
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