Owner's manual

Four Times
If DSI board does not reset, then replace the board. (Internal board fault.) If DSI board resets, then have qualified electrician check power source for power quality problems. (Frequency, line noise, line spikes, loose connections, too small wire gauge.)
Five Times Rapid On/Off cycling of the burner.
Flame Sense Degradation. See flame sensor related problems in three time flash pattern.
(1) With any electrical problem, all wiring should be checked for good connections and proper voltage and repaired if a problem
is found.
(2) IMPORTANT: Remember, the ignition control board sends and receives voltages throughout the entire operation sequence.
The ignition control board terminals should also be checked for delivering proper voltages, in addition to the individual components as indicated by the respective flash pattern, to make sure the board itself is working properly.
(3) In order to verify the diagnosis of the flashing LED or to reset the unit and retry ignition, disconnect the unit from power and
then reconnect to power or if your heater uses a thermostat, turn down thermostat below room temperature and then turn thermostat above room temperature. When testing is completed, reset thermostat to desired temperature.
(4) The high-limit switch will open or “trip” for a variety of reasons, such as high gas pressure, low voltage, excessive dust and
dirt build-up within the heater, dirty fan assembly, fan is not tightened onto motor shaft, and obstructions in air inlets or discharge outlet of heater.
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