Henny Penny PFG-691, Technical Manual

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Model 691
2-29
2-29. IGNITION MODULES Sends 24 volts to the ignitors and gas control valve.
Two different modules are in the field. White Rogers modules
have a red LED, and Robertshaw modules have a green LED.
These LEDs help to identify a failure.
For White Rogers modules, when the control calls for heat, the
White Rogers
LED will flash, then go out, indicating the control is functional.
If the LED continues to flash, the module did not sense a pilot
flame. If the LED stays on continuously, an internal fault has
been detected, and the module should be replaced.
Robertshaw
For the Robertshaw, when the control calls for heat, LED will
LED
be on continuously, indicating the control is functional. If LED
flashes, the module did not sense a pilot flame. If LED goes
out while the control is calling for heat, an internal fault has
been detected, and the module should be replaced.
1. Remove electrical power supplied to the unit.
To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.
2. Remove the control panel as discussed in the Complete
Control Panel-Henny Penny Section.
3. Remove the condensation drain pan.
4. Using a Phillip’s head screwdriver, remove the screws
securing the module cover and remove the cover.
5. Label and remove the wires from the module.
6. Using a 3/8” socket and Phillip’s head screwdriver, remove
nuts and screws securing the module and remove it from
the unit.
7. Replace with module in reverse order.
LED Indication
Replacement
Sept. 2004