Évaluations - 4, GPA: 3.8 ( )

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Indicates a blockage or interference at the appliance flue. Indicates an error/malfunction in the blower motor circuit. Circulate Fail Ignition Fail Indicates an error/malfunction in the circulating pump circuit. Indicates a malfunction in the ignition system circuit. 7 Troubleshooting The WHC1502 Series Control System has many inherent diagnostic and fault detection routines built into its operating hardware and software. These routines, in conjunction with the four (4) digit LED display and eleven (11) LED status indicators on the Display Board, can greatly assist any service person in quickly pinpointing the source of a problem which may occur within the appliance. Under certain circumstances, multiple LED’s will illuminate to better pinpoint the target area(s). The following list defines the error code messages that scroll across the LED display: ERROR MESSAGE REPORTED ERROR OPEn InLEt ProbE No probe detected at connector CN1 on Control Board. OPEn OutLEt ProbE No probe detected at connector CN2 on Control Board. Circulation FAIL No flow detected at flow switch. Inducor FAIL No pressure detected at pressure switch. FLAmE SenSE FAIL Flame sense detected before gas valve is turned on. SenSor FAIL One of the sensors, Flow, Pressure, Hi Gas, or Lo Gas was not in the correct state. Ignitor FAIL No Ignitor current sensed. No Ignition Flame not detected after 1 or 3 tries. ECO FAIL ECO/High Limit switch opened. Control FAIL Relay did not open or close properly. BLOCKED VENT SHUT-OFF SYSTEM The Boiler is equipped with a blocked vent shut-off system which will close the gas valve and shut off the main burner gas when there is excessive pressure in the vent system due to a partially or completely blocked vent system. The DIA-SCAN II display on the front panel will indicate this failure condition. DO NOT ATTEMPT TO OPERATE THE BOILER if this situation occurs. Shut the boiler off before performing all the steps shown in "TO TURN OFF GAS TO APPLIANCE" section of the Lighting and Operating Instructions. Contact a qualified service agent to inspect the unit and vent system and correct the problem. VENT SYSTEM The flue products are corrosive in nature and if the boiler is vented horizontally the flue gases are at a higher pressure than the surrounding air pressure. Inspection of the boiler and vent system is necessary to insure that flue gas leakage to the surrounding area does not occur. Inspect the external surfaces of the vent system every 3 months for corrosion and leakage. Inspect the vent terminations for corrosion and foreign matter which may be blocking the exhausting flue products. Call a qualified service agent to replace or repair any corroded or leaking parts. Qualified service agent must inspect internal surfaces of the vent system and the boiler at least once a year. BURNER SYSTEM To maintain safe operation and the greatest efficiency for the boiler, observe the burner flame through the observation port on the left jacket panel, once a month fo...

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