Chapter A - Troubleshooting - Honeywell TR80 Installation And Operating Manual

APPENDIX
A
TROUBLESHOOTING
The fault condition is displayed on screen along with alarm symbol. Press OK but-
ton in ready mode then, up/down buttons to cycle the display between several val-
ues.
The fault condition will be displayed as an error code. Refer the troubleshooting
table listed below to understand the error codes, it's meaning and action to be per-
formed to resolve the error.
Error Code
E01
E02
E03
E04
TR80 - Installation and Operation Guide
Meaning Action
Onboard sensor fault Contact Customer care
External sensor fault Check wiring and replace sensor if faulty
Modbus loss of comms Check wiring and master controller
Port 2 timeout fault Check wiring and DALI64 sensor on port 2
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