Baxi Combi Instant 80 HE and 105 HE Quick Start Manual download pdf (Page 45)

14.0 Fault Finding

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

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’.

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

Change main PCB.

Go to section ‘F’.

neon flashing

Go to section ‘I’ & ‘N’.

YES

neon flashing.

Does the burner remain lit ?

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Baxi Combi Instant 80 HE and 105 HE Quick Start Manual Page 45

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