Potterton Promax HE Store 90 Litres Installation & Servicing Instructions Manual page 44

Domestic Hot Water - Follow operational sequence
Turn selector switch to
The display illuminates
YES
Error 110 flashing
Error 133 flashing
NO
Error 20, 28 or 50 flashing
NO
Error 119 flashing
NO
3-way valve is open to
Domestic Hot Water circuit
YES
Pump runs
YES
Fan runs
YES
Fan runs at correct speed
YES
Spark at ignition electrodes
for up to 5 seconds and for
3 attempts
YES
NO
Burner lights
YES
Operation sequence
successful
44
Select HW 'On All Day' or
NO
24Hr at programmer
Turn the selector switch to
YES
reset position for 5 seconds
YES
Go to section 'E'
YES
Go to section 'C'
NO
Go to section 'K'
Error 125 flashing
NO
Go to section 'B'
NO Error 160 flashing
Go to section 'D'
NO
Error 160 flashing
Go to section 'L'
NO
Error 133 flashing
Go to section 'F'
YES
Burner does not stay
alights after 5 seconds
NO
Go to section 'A'
YES
If the error 110 is still
flashing. Go to section 'J'
Go to section 'H'
YES
Turn the selector switch to the
reset position for 5 seconds
YES
Error 133 flashing
Go to section 'I'
© Baxi Heating UK Ltd 2006