Potterton Gold HE A Range Installation & Service Instructions Manual page 54

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
Turn Domestic Hot Water
thermostat to Maximum.
Open DHW tap fully.
DHW Hall Effect sensor
operated (red neon on the
sensor illuminated
YES
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
Burner output modulates to
maintain the temperature set
YES
Close DHW tap
YES
DHW flow sensor senses no
flow. Burner goes out
54
© Baxi Heating UK Ltd 2008
NO
Go to section 'A'
YES Turn the selector switch to
reset position for 5 seconds
YES
Go to section 'E'
YES
Go to section 'C'
NO
DHW flow rate more than 2
l/min
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
Reduce DHW flow rate
Burner modulates
NO
Error 130 flashing
Go to section 'M'
YES
Fan stops after 10 seconds
18.0 Fault Finding
YES
If the error 110 is still flashing.
Go to section 'J'
Go to section 'B'
YES
Is mains water filter and
assembly clean?
YES
Is the magnetic detector free
to move in the Hall Effect
sensor
Go to section 'H'
YES
Turn the selector switch to the
reset position for 5 seconds
YES
Error 133 flashing
Go to section 'I'
NO
Clean DHW NTC sensor
and DHW heat exchanger
YES
Pump runs for 30 seconds
YES
Operation sequence
successful