IGNITION FUNCTIONAL CHECK 2

NO SPARK

Ensure there is no debris around the pilot assembly,

(e.g. soot etc.) which could short the spark, clean the area.

 

 

Consult the users

 

 

 

instructions, retry.

 

From Ignition Fault

No

Is the valve being

Yes

 

Finding Chart 1

 

 

 

FLAME FAILURE FUNCTIONAL CHECK 3

PILOT WILL NOT STAY LIT OR FIRE GOES OUT IN USE

Ensure there is no debris around the pilot assembly, (e.g. soot etc.) Check for fluff in the pilot aeration hole. See diagram 5 in Replacing Parts, section 2.3.

Light the pilot and keep the control knob pushed in

at least 10 seconds before letting go.

20

 

 

 

 

 

 

 

 

 

 

 

operated correctly?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the gap between

 

No

 

 

 

 

 

 

 

 

 

 

 

electrode and

 

 

 

 

Reset the electrode gap, retry.

 

thermocouple 4.0mm?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Has ignition lead

 

 

Yes

 

 

 

 

 

become detached or is

 

 

 

 

 

Correct and retry.

 

 

 

 

 

 

 

 

connection poor?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

Check for defective or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Remove the electrode lead

 

 

 

 

 

 

 

damaged control knob spindle

Yes

from electrode with insulated

 

 

or cam operation. Check for

pliers. Hold the tip 3.5mm from the

 

 

correct location of piezo

 

 

 

 

 

 

 

 

 

No

 

 

Will pilot

 

 

Yes

With the pilot

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

stay alight?

running is the gas

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pressure as stated on

No

 

 

 

 

 

 

 

No

the databadge?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Problem is with the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pipe work or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

fittings which lead

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to the fire. Correct

 

 

 

 

 

Yes

 

 

 

 

 

 

 

and retry.

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the pilot flame of the

 

 

 

 

 

 

 

Is thermocouple

 

 

 

 

 

 

 

 

 

 

 

 

correct length? See

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

connection good

 

 

 

 

 

diagram 5 in Replacing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

in back of valve?

 

 

 

 

 

Parts, section 2.3.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

With the fire running

on full is the gas at the pressure stated on the databadge?

Yes

Run for 3 mins,

turn off, time interval until mag unit shuts with a click. Is this greater than 7 seconds?

No

Yes

pilot pipe work, is there a spark

components. Correct and retry.

when the valve ‘clicks’?

 

Yes

Tighten the

connection and retry.

SERVICING INSTRUCTIONS FAULT FINDING CHARTS

No

Is the electrode wire

detachable from the piezo

in the valve?

 

Remove the electrode lead from

Yes

the piezo. Operate the valve.

 

Does a spark jump from the

 

No

Replace ODS unit.

No

Replace the lead, retry.

piezo to the valve body?

Yes

Change the ODS unit.

Will pilot

stay alight?

No

Change mag

unit.

Yes

No

Run for 3 mins, turn off, time interval until mag unit shuts with a click. Is this greater than 7 seconds?

Yes

Replace the pilot unit.

Replace the electrode

lead and retry.

 

SYSTEM OK

Page 20
Image 20
Stovax P8627 BS, P8627 MA manual Ignition Functional Check, Flame Failure Functional Check

8627 MA, P8627 MA, P8627 BS, 8627 BS specifications

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