Step 1. If control has gone into lockout due to excessive tank temperature (four flashes, three second pause), reset control by rotating gas control knob to “OFF” position and wait a minimum of five (5) minutes. Then follow lighting instructions and return the gas control knob to a desired setpoint.

Step 2. Observe green light indicator. Does status code 4 (four flashes, three second pause) appear?
a) If no, resume normal operation.
b) If yes, continue with Step 3.

Step 3. Following “Honeywell Cover Removal,” “Honeywell Valve Body Removal and Temperature Sensor Removal” instructions, disassemble gas control to access the temperature sensor.