Baxi NIAGARA, Инструкции по установке и обслуживанию

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26
F
Replace PCB
Check and correct if necessary
1.Ignition electrode and lead
2. Electrode connection
3. Spark gap and position
120V at Main PCB - A1 con-
nector across terminals
3 & 5. Check wiring
YES
NO
Replace igniter
YES
G
NO
Check the burner setting pressure of the
gas valve
(see Section of Commissioning)
1.
Voltage at modulating coil of gas valve is:
Max. burner press.approx 9V DC (13V DC LPG)
Min. burner press.approx 1V DC
Current at modulating coil of gas valve is:
(Use an instrument with average function for this measure)
30 ÷ 230 mA DC (45 ÷ 310 mA DC LPG)
Replace gas valve
NO
Replace PCB
2.
Check and correct if necessary
1. Flame sensing electrode and lead connections
2. Electrode position
Flame current should be > 1 µA approx.
Replace PCB
YES
Replace flame sensing electrode
NO
YES
Ensure that mains input terminal
L is Live (120V) and N is Neutral
(0V)
H
Check terminal 1 of ON/OFF/RESET selector is in con-
nection with PCB - A4 connector terminal 2
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
L
Replace PCB
YES
Replace safety ther-
mostat
YES
NO
Overheat thermostat operated or
faulty, i.e. continuity across ther-
mostat terminals Allow to cool. Continuity across
thermostat terminals more than
1.5 ohm
I