PP1
FAULT CODE
Grant
Flow/Return Temperature Sensor Fault
Medium Severity
Engineer Required
The inlet (return) water temperature sensor has failed on Grant heat pump models.
Step-by-Step Fix Guide
-
Step 1 Engineer only
Call an OFTEC registered engineer to test and replace the sensor
Gas Safe Reminder
Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.