49 / E49
Control is unable to enter Charging Mode because indoor heat has been turned on by thermostat; set thermostat to off position
This code typically points to
- Heat provided by secondary heating source
Next checks to confirm
- Turn off heater using thermostat before operation
Escalation
Charge mode blocked
Reset behavior
Clears after thermostat is set correctly and indoor heat is off.
Informational
No action needed