Fault And Alert Messages (cont)
Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualified service agent in your area.
Possible Causes - Check/Repair | Displayed Fault/Alert Message | ||||
• The control system has detected the Blower Prover Switch |
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Blower Prover Failure |
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contacts are closed when they should be open at the beginning of |
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a heating cycle - see the Sequence Of Operation on page 58. |
| Fault occurred 2 mins ago |
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• Pinched/shorted Blower Prover Switch wiring - see beginning on | The blower prover switch is |
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closed out of sequence. |
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page 8 for switch location. |
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• Jumper wire connected to the Blower Prover Switch - remove |
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jumper wire. Jumper wires must never be used, read all Warnings | Call a service professional: |
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on page 61. | Your Company Name Here |
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• Excessive wind outdoors pressurizing the vent system piping. | (press [DOWN] for more....) |
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• Excessive negative air pressure in the installed space. | CHANGE | BACK | ADVANCED |
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• The control system has detected the Blower Prover Switch |
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Blower Prover Open |
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contacts are remaining open after the control system has |
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energized the Combustion Blower - see the Sequence Of |
| Fault occurred 2 mins ago |
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Operation on page 58. | The blower prover switch remains |
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• Loose or open wiring to the Blower Prover Switch - see beginning | open after the blower has been |
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energized. |
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on page 8 for switch location. |
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• Blower Prover Switch air sensing tube disconnected, kinked, filed | Call a service professional: |
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with condensate, damaged or leaking - repair or replace tube. | Your Company Name Here |
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• Combustion Blower is not running when energized. | (press [DOWN] for more....) |
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• Loose or open wiring or plug connections to Combustion Blower. | CHANGE | BACK | ADVANCED |
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• The control system has detected the Blocked Intake Air Switch |
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contacts are open. |
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• Loose or open wiring to the Blocked Intake Air Switch - see | Blocked Air Intake |
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beginning on page 8 for switch location. |
| Fault occurred 2 mins ago |
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• Excessive equivalent pipe length, exceeded the maximum number | The combustion air intake is |
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of 90° elbows or wrong pipe size used in the intake air piping | restricted. |
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system - see Venting Requirements on page 24. |
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• Intake air screen was not removed prior to connecting the intake | Call a service professional: |
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air piping to the water heater and is clogged/blocked with debris - |
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Your Company Name Here |
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see Figure 19 on page 26. |
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(press [DOWN] for more....) |
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• SUF 199 & 250 models only; condensate has drained into the |
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CHANGE | BACK | ADVANCED |
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Blocked Intake Air switch through the sensing tube, see SUF 199 & |
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SUF 250 Intake Air Connection on page 23. |
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• Excessive negative air pressure in the installed space. |
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• The control system has detected the ECO (energy cut out) Switch |
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contacts are open. |
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Energy Cut Out (ECO) |
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• The ECO switch is a normally closed switch that opens on a |
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temperature rise to prevent excessive water temperature in the |
| Fault occurred 2 mins ago |
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Tank temperature is excessive. |
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storage tank. The ECO switch is inside the Upper Temperature |
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Probe (two red wires) - see beginning on page 8 for Upper Probe | The water heater has been |
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disabled. |
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location. |
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• Loose or open wiring to the ECO switch in the Upper Temperature | Call a service professional: |
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Probe - two red wires. | Your Company Name Here |
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• Improper water system piping and/or excessively high return | (press [DOWN] for more....) |
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(recirculation) loop water temperature - see the Water Piping | CHANGE | BACK | ADVANCED |
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Diagrams beginning on page 71. |
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• The control system has not detected any voltage from the powered |
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anode rods - see beginning on page 8 for location. |
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| Alert: |
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• No water in the storage tank. |
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| No Anode Voltage |
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• Loose or open wiring connections to the powered anode rods - see |
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| Alert occurred 2 mins ago |
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beginning on page 8 for location. | No voltage detected from |
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• Powered anode rod wiring shorted to ground. | Powered Anode(s). |
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• The water heater is not properly grounded - see Power Supply |
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Connections on page 41. | Call a service professional: |
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• Loose or open ground wires. | Your Company Name Here |
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• Top fitting (3/4 inch bushing) of the powered anode rods were | (press [DOWN] for more....) |
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CHANGE | BACK | ADVANCED |
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saturated with water during installation - with power to the water |
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heater turned off, carefully remove anode rods and dry out |
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bushing(s). |
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63
