Baxi Eco 3 Service Manual download pdf (Page 41)

14.0 Fault Finding

41

Check and correct if necessary

1. Flame sensing electrode and lead connections

2. Electrode position

Flame current should be 1 µA approx.

Replace PCB

Replace

PCB

YES

YES

Replace flame sensing electrode

NO

YES

Ensure that mains input

terminal L is Live (230V) and

N is Neutral (0V)

I

Check terminal 1 of ON/OFF/RESET selector is in

connection with PCB - M1 connector terminal 16

Check electrical continuity across terminals 1 & a

of ON/OFF/RESET selector when turned to

position

R

Replace ON/OFF/RESET selector

NO

Replace PCB

YES

K

Replace safety

thermostat

YES

NO

Overheat thermostat operated

or faulty, i.e. continuity across

thermostat terminals

Allow to cool. Continuity

across thermostat terminals

more than 1.5 ohm

J

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