Monessen Hearth WDV500 User Manual

38

OPERATION 

Install batteries and/or 

plug in the AC board 

Flip the master switch 

(rocker switch) to the

ON position 

Press the ON button on 

the Command Center 

FAULT 

No beep in about 

8 seconds 

No beep 

or

no sound from the 

valve indicating pilot 

solenoid open 

No sparking on

the pilot 

Sparking doesn’t

continue

Pilot doesn’t light 

Main burner doesn’t

light

DIAGNOSIS

Make sure 

Command

Center and 

the control 

board are 

connected by 

a 2 feet or 15 

feet cable 

Check NG/LP 

conversion cap 

and control

board

connections

Check pilot 

connections

The Control Board is having interference from the 

surrounding metal (Ground) 

Check gas supply 

Go through

Battery polarity wrong? 

LED on the Command 

Center does not show 

solid green? 

The 5-pin connector on 

the AC board broken or 

bent?

AC plug is plugged to 

AC mains? 

Battery voltage low? 

Using

battery?

Check valve 

connections

Check power 

supply (go 

through       ) 

A 

E

Check

grounding

Go through 

B

Go through  C

The sensor on the pilot

is not in the flame

(pilot flame too small)? 

ACTION

Re-install batteries 

Change batteries 

Plug the AC plug to  

AC mains 

Repair or replace the

AC Board 

Replace the AC Board 

Replace the Control

Board or

Command Center 

Sparking is happening 

elsewhere (under the 

pilot), re-install/replace 

the pilot 

Re-install the Control

Board, move it around 

or change the 

Control Board 

Sparking is not in the

path of gas flow, adjust  

sparker position or

replace the pilot 

Adjust sensor position

or replace the pilot 

After the beep 

A 

B

C

D

E

F

FP1911 

troubleshoot sc 

8/08