Vanguard Heating VN6B, VN12A Trouble Shooting, Observed, Possible, Problem, Cause, Remedy

Models: VN6B VN12A

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TROUBLE-

TROUBLE-

SHOOTING

Note: All troubleshooting items are listed in order of operation.

WARNING

WARNING ICON

G 001

Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater.

CAUTION

WARNING ICON

G 001

Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/pilot unit.

OBSERVED

POSSIBLE

 

 

PROBLEM

CAUSE

REMEDY

 

 

 

 

 

When ignitor button

1.

Ignitor electrode posi-

1.

Replace ignitor

is pressed and control

 

tioned wrong

 

 

knob is pressed in

2.

Ignitor electrode broken

2.

Replace ignitor

and turned to the

3.

Ignitor electrode not

3.

Reconnect ignitor cable

PILOT position,

 

connected to ignitor

 

 

there is no spark at

 

cable

 

 

ODS/pilot

4.

Ignitor cable pinched or

4.

Free ignitor cable if

 

 

wet

 

pinched by any metal or

 

 

 

 

tubing. Keep ignitor

 

 

 

 

cable dry

 

5.

Piezo ignitor nut is loose

5.

Tighten nut holding

 

 

 

 

piezo ignitor to heater

 

 

 

 

cabinet. Nut is located

 

 

 

 

inside heater cabinet at

 

 

 

 

top.

 

6.

Broken ignitor cable

6.

Replace ignitor cable

 

7.

Bad piezo ignitor

7.

Replace control valve

 

 

 

 

(piezo is part of control

 

 

 

 

valve)

 

 

 

 

 

When ignitor button is pressed and control knob is pressed in and turned to the PILOT position, there is spark at ODS/pilot but no ignition

1.Gas supply turned off or manual shutoff valve closed

2.Control knob not in PILOT position

3.Control knob not pressed in while in PILOT position

4.Air in gas lines when installed

5.ODS/pilot is clogged

6.Gas regulator setting is not correct

1.Turn on gas supply or open manual shutoff valve

2.Turn control knob to PILOT position

3.Press in control knob while in PILOT position

4.Continue holding down control knob. Repeat igniting operation until air is removed

5.Clean ODS/pilot (see Cleaning and Mainte- nance, page 20) or replace ODS/pilot assembly

6.Replace gas regulator

Continued

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Vanguard Heating VN6B, VN12A installation manual Trouble Shooting, Observed, Possible, Problem, Cause, Remedy