Troubleshooting; Electrical - Raypak RAYTHERM 0133-4001 Installation And Operating Instructions Manual

TROUBLESHOOTING

ELECTRICAL

ELECTRONIC IGNITION IID
Intermittent Pilot System
TROUBLESHOOTING HONEYWELL S8600
START
TURN GAS SUPPLY OFF.
TURN THERMOSTAT
(CONTROLLER) TO CALL
FOR HEAT
POWER TO MODULE
(24 V NOMINAL)
YES
SPARK ACROSS
IGNITER/SENSOR GAP
YES
TURN GAS SUPPLY ON
PILOT BURNER LIGHTS?
YES
SPARK STOPS WHEN
PILOT IS LIT?
YES
MAIN BURNER LIGHTS?
YES
SYSTEM RUNS UNTIL
CALL FOR HEAT ENDS?
YES
CALL FOR HEAT ENDS
SYSTEM SHUTS OFF?
YES
TROUBLESHOOTING
ENDS
NOTE: Before troubleshooting, familiarize yourself with the start-up and checkout
procedure.
Check line voltage power, low voltage transformer, limit controller, thermostat
NO
(controller) and wiring.
Pull ignition lead and check spark at module.
NO
If spark Okay:
• Check ignition cable, ground wiring, ceramic insulator and gap, and correct.
• Check boot of the ignition cable for signs of melting or buckling. Take protective
action to shield cable and boot from excessive temperatures.
If not, replace module.
• Check that all manual gas valves are open, supply tubing and pressures are
NO
good, and pilot burner orifice is not blocked.
• Check electrical connections between module and pilot operator on gas control.
• Check for 24 Vac across PV-MV/PV terminals on module. If voltage is
okay, replace gas control; if not, replace module.
NOTE: If S8600H goes into lockout, reset system. Lockout is used on propane
models.
NO
• Check continuity of ignition cable and ground wire.
• Clean flame rod.
• Check electrical connections between flame rod and module.
• Check for cracked ceramic flame rod insulator.
• Check that pilot flame covers flame rod and is steady and blue.
• Adjust pilot flame.
• If problem persists, replace module.
• Check for 24 Vac across MV-MV/PV terminals. If no voltage, replace module.
NO
• Check electrical connections between module and gas control. If okay, replace
gas valve or gas control operator, i.e. pilot gas valve, flow switch, etc.
NOTE: IF S8600H goes into lockout, reset system.
NO
• Check continuity of ignition cable and ground wire.
NOTE: If ground is poor or erratic, shutdowns may occur occasionally even though
operation is normal at the time of checkout.
• Check that pilot flame covers flame rod and is steady and blue.
• If checks are okay, replace module.
• Check for proper thermostat (controller) operation.
NO
• Remove MV lead at module; if valve closes, re-check temperature
controller and wiring; if not, replace gas valve.
32
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WARNING
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HIGH VOLTAGE
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For qualified technicians ONLY
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NOTE: Some heaters may be equipped with
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pilot fails to light. To reset, interrupt power
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to heater.
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