Raypak 2600401 Installation & Operating Instructions Manual

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Raypak 2600401 Installation & Operating Instructions Manual Manual pdf 30 page image

30These instructions are primarily intended for the use of qualified personnel specifically trained and experienced in theinstallation of this type of heating equipment and related system components. Installation and service personnel maybe required by some states to be licensed. Persons not qualified shall not attempt to install this equipment norattempt repairs according to these instructions.PROBLEM(S)1)When tankstat is turned on, heaterdoes not operate.2)When tankstat is calling for heat,pump is on, but burners will not turnon.CAUSE(S)1)No power to the heater.2)Defective tankstat or disconnectedwire in thermostat circuit.3)Defective transformer.1) For Standing pilot models pilot burnernot lighted.2) If pilot burner will not stay lighted,thermocouple or gas valve may bedefective.3)Gas knob in "Pilot" position.4)Vent switch is open.5)Roll-out switch is open.6)Manual Reset High limit is open.7) Defective ignition module ordefective gas valve.SOLUTION(S)1)Check circuit breakers, disconnectswitch. Make sure power is on.2)Check continuity on thermostat andwiring circuit. Replace thermostat, orrepair wiring connections.3) Check secondary voltage. If no 24V,replace transformer.1) Light pilot burner. (Follow lightinginstructions on rating plate).2) Check thermocouple MV generation.If less than 25MV (open circuit), re-place thermocouple. If between 25-35 MV, replace gas valve.3) Turn knob to "ON" position.4) Check for blockage of venting system or disconnected vent piping. Afterproblem is corrected push button toreset vent switch.5) Check for blockage of flue or sootedheat exchanger. After problem iscorrected push button to resetroll-out switch.6) Check water flow and adjust toobtain 8° to 10°F temperature rise.7)On Honeywell module, check voltageacross terminals MV and MV/PV. Ifno 24V is present, replace module. If24V is present, replace gas valve.TROUBLESHOOTING