Troubleshooting The 24 Vac Circuit In Non-Electronic Ignition Units - Frymaster 47 SERIES Installation, Operation, Service, And Parts Manual

7.10.3 Troubleshooting the 24 VAC Circuit in Non-Electronic Ignition Units

Probable cause is
VAC on J3 Pin 8 (and
No
failed 24 Volt
Transformer.
Probable cause is
continuity of Drain
No
failed Drain Safety
Safety Switch(es)
Switch.
47 SERIES GAS FRYERS
CHAPTER 7: SERVICE PROCEDURES
Verify that Drain
Valve(s) are fully
closed, then turn
Which LEDs are
None
PWR LED only
Are there 24
Yes
VAC on the PWR
J1 Pin 8, if Dual
Vat)?
Probable cause
is failed Interface
Yes
Is
VAC on V1S (or V1D
and V2D, if Dual
"0"?
Yes
have Drain Safety
Probable cause place between PWR and
Yes
is failed Interface V1S (or V1D and V2D, if Dual
Board. Vat) and is continuity
Probable cause
is missing or failed
controller on.
lit?
Either or both GV LED (with or
24V LED and without other
Are there 24
Yes
terminal(s)?
No
Board.
Yes
Are there 24 Are there 24
VAC on J3 Pin 9 (and
No
J1 Pin 9, if Dual
Vat)?
No
Does unit
continuity of High
Limit Switch
Switch(es)?
No
Is jumper in
Probable cause
is failed High Limit
"0"?
No
jumper.
7-32
LEDs)
Vat)?
Yes
24 VAC Circuit is
Is
good. Problem may be with
Yes
Gas Valve. Refer to Gas
Valve Troubleshooting
"0"?
Guide.
No
Switch.