Sync 2.0 / 3.0 (Evolution e-codes)
1400
High temperature
Engine · Alarm
Gentek describes 1400 as the high engine temperature switch closing because the engine exceeded its high-temperature limit. The check it prints is debris blocking the vents and restricting airflow. If nothing is blocking the air, it says to check the high-temperature switch and its wiring.
Seen on: Honeywell Sync 2.0 and 3.0 home standby controllers. Gentek's Evolution fault guide says this e-code list applies to those Sync controllers because they use the Generac Evolution control.
Likely causes
- Debris blocking cooling air.
- High-temperature switch or wiring.
Checks an owner can do
- With the set cool and off, clear debris from the inlet and outlet vents.
When to call a pro
If the vents are clear and 1400 returns, the switch and wiring are the guide's next step and should be done by a technician.
Source
Wording follows that document. Firmware can change a threshold. If this page and the manual shipped with your unit disagree, follow the manual.
What fixed mine
No approved reports for this code yet. Send one. It stays in the review queue until it is approved.
Related Honeywell codes
https://generatorcodes.com/brand/honeywell/1400