3DJH
C--Ram Ignition Control Troubleshooting Guide
RAM CONTROL
HEATING TROUBLE SHOOTING SEQUENCE
NORMAL HEATING MODE
ABNORMAL HEATING MODE
LED: SLOW FLASH RATE
THERMOSTAT CALLS FOR HEAT
LED: FAST FLASH RATE
FLAME OFF?
CONTROL SELF--CHECK OKAY?
HI LIMIT SWITCH CLOSED?
PRESSURE SWITCH OPEN?
COMBUSTION AIR BLOWER ON?
PRESSURE SWITCH CLOSED?
PREPURGE (45 seconds)
IGNITION TRIAL (7 seconds) ---- START IGNITION
SPARK, OPEN MAIN GAS VALVE. INCREMENT
TRIAL REGISTER. HAS FLAME BEEN REGISTERED
WITHIN 7 SECONDS?
SYSTEM FAN ON.
(Fixed 45--second delay)
FLAME SENSE OKAY?
FLAME CONTINUOUSLY CHECKED?
ROLLOUT SWITCHES CLOSED
HI LIMIT SWITCH CLOSED?
PRESSURE SWITCH CLOSED?
THERMOSTAT OPENS
LED: SLOW FLASH RATE
COMB. AIR BLOWER OFF (5 sec. delay)
FAN OFF (After selected 90, 120,
180, or 240 delay)?
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
LOCKOUT: MAIN VALVE OFF
COMB. AIR AND SYSTEM FANS ON
RESET THERMOSTAT
LED: 5 flash if flame sensed with valve off
LED: Steady on if control board failure
NO
NO
CHECK TO SEE IF MAIN VALVE IS OFF.
SEQUENCE HOLDS UNTIL HI LIMIT CLOSES.
LED: 4 flashes.
NO
CHECK TO SEE IF MAIN VALVE IS OFF.
SEQUENCE HOLDS UNTIL PRES. SWITCH OPENS.
LED: 3 flashes.
CHECK TO SEE IF MAIN VALVE IS OFF.
SEQUENCE HOLDS UNTIL PRES. SWITCH CLOSES.
LED: Fast flash rate.
MAIN VALVE AND SPARK ARE OFF.
INCREMENT TRIAL REGISTER
THREE TRIALS COMPLETED?
NO
NO
NO
IGNITION RESET PERIOD
COMBUSTION & SYSTEM FANS OFF.
IS 60 MIN. RESET PERIOD COMPLETE?
LED: Fast flash rate.
MAIN VALVE AND SPARK OFF.
START IGNITION SPARK (IN 0.8 SEC. MAXIMUM).
HAS FLAME BEEN DETECTED WITHIN 7 SEC.?
LOCKOUT. MAIN VALVE OFF.
COMBUSTION AND SYSTEM FANS ON.
RESET OR REPLACE ROLLOUT SWITCH.
LED: 4 flashes.
MAIN VALVE OFF. COMBUSTION & SYSTEM FANS ON.
SEQUENCE HOLDS UNTIL SWITCH CLOSES.
LED: 4 flashes for hi limit.
LED: 3 flashes for pressure switch.
SWITCH CLOSED
COMBUSTION FAN ON. SYSTEM FAN OFF.
(AFTER DELAY TO OFF INTERVAL COMPLETED.)
LED: Fast flash rate.
NO
YES
YES
NO
NO
YES
NO
NO
NO
YES