Troubleshoot

FOUR FLASHES - TROUBLESHOOTING CODES
• In lockout from failed ignition or flame loss
unit DOES NOT SPARK
• Unit Sequence:
• Green Light on, call for heat
• Power exhauster cycles on, starts pre purge
• 24 VAC power present through pressure switch, limits, and to valve
• No spark at igniter, RAW gas is going through orifices for approx. 6
seconds during this cycle, then cycles off, no yellow flame sense light
• Will cycle 5 times in this manner. Then Green light will give four
flashes. Power exhauster will cycle off. Fan motor does not turn on.
• Possible Causes
Back Start Over