Baxi Potterton 80 HE - Manual (Page 45)

14.0 Fault Finding
45
Burner output modulates until
set temperature is reached.
Burner goes out. Fan stops.
Pump continues to run for
3 minutes.
(room thermostat open)
Operation sequence
correct
Go to section ‘G’.
YES
NO
YES YES YES
CH temperature higher than
set point of CH thermostat
control. When CH
temperature decreases cycle
continues.
Central Heating - Follow operational sequence (Continued)
Fan runs at max speed.
Air pressure switch proved.
Spark at ignition electrodes for
up to 10 seconds.
neon illuminated
Burner extinguishes after 10
seconds.
neons flashing
Go to section ‘D’.
Turn the selector to reset.
If regular resetting is required
or appliance still does not
operate investigation is
necessary.
Go to section ‘J’ & ‘O’.
NO
YES
neon flashing
Go to section ‘E’.
neon flashing.
Turn selector to the reset
position. If the neon does not
extinguish go to sections H and
K.
Change main PCB.
Go to section ‘F’.
neon flashing
Go to section ‘I’ & ‘N’.
YES
YES
NO
NO NO
YES
YES
NO
YES
NO
neon flashing.
NO
Does the burner remain lit ?
NO
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