State Industries SUF-100-250, SUF-60-120 instruction manual Blower Prover Failure, No Anode Voltage

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
	Blower Prover Failure
contacts are closed when they should be open at the beginning of
a heating cycle - see the Sequence Of Operation on page 58.		Fault occurred 2 mins ago
• Pinched/shorted Blower Prover Switch wiring - see beginning on	The blower prover switch is
	closed out of sequence.
page 8 for switch location.
• Jumper wire connected to the Blower Prover Switch - remove
jumper wire. Jumper wires must never be used, read all Warnings	Call a service professional:
on page 61.	Your Company Name Here
• Excessive wind outdoors pressurizing the vent system piping.	(press [DOWN] for more....)
• Excessive negative air pressure in the installed space.	CHANGE	BACK	ADVANCED
• The control system has detected the Blower Prover Switch
	Blower Prover Open
contacts are remaining open after the control system has
energized the Combustion Blower - see the Sequence Of		Fault occurred 2 mins ago
Operation on page 58.	The blower prover switch remains
• Loose or open wiring to the Blower Prover Switch - see beginning	open after the blower has been
	energized.
on page 8 for switch location.
• Blower Prover Switch air sensing tube disconnected, kinked, filed	Call a service professional:
with condensate, damaged or leaking - repair or replace tube.	Your Company Name Here
• Combustion Blower is not running when energized.	(press [DOWN] for more....)
• Loose or open wiring or plug connections to Combustion Blower.	CHANGE	BACK	ADVANCED

• The control system has detected the Blocked Intake Air Switch
contacts are open.
• Loose or open wiring to the Blocked Intake Air Switch - see	Blocked Air Intake
beginning on page 8 for switch location.		Fault occurred 2 mins ago
• Excessive equivalent pipe length, exceeded the maximum number	The combustion air intake is
of 90° elbows or wrong pipe size used in the intake air piping	restricted.
system - see Venting Requirements on page 24.
• Intake air screen was not removed prior to connecting the intake	Call a service professional:
air piping to the water heater and is clogged/blocked with debris -
	Your Company Name Here
see Figure 19 on page 26.
	(press [DOWN] for more....)
• SUF 199 & 250 models only; condensate has drained into the
	CHANGE	BACK	ADVANCED
Blocked Intake Air switch through the sensing tube, see SUF 199 &
SUF 250 Intake Air Connection on page 23.
• Excessive negative air pressure in the installed space.
• The control system has detected the ECO (energy cut out) Switch
contacts are open.
	Energy Cut Out (ECO)
• The ECO switch is a normally closed switch that opens on a
temperature rise to prevent excessive water temperature in the		Fault occurred 2 mins ago
	Tank temperature is excessive.
storage tank. The ECO switch is inside the Upper Temperature
Probe (two red wires) - see beginning on page 8 for Upper Probe	The water heater has been
	disabled.
location.
• Loose or open wiring to the ECO switch in the Upper Temperature	Call a service professional:
Probe - two red wires.	Your Company Name Here
• Improper water system piping and/or excessively high return	(press [DOWN] for more....)
(recirculation) loop water temperature - see the Water Piping	CHANGE	BACK	ADVANCED
Diagrams beginning on page 71.
• The control system has not detected any voltage from the powered
anode rods - see beginning on page 8 for location.
		Alert:
• No water in the storage tank.
		No Anode Voltage
• Loose or open wiring connections to the powered anode rods - see
		Alert occurred 2 mins ago
beginning on page 8 for location.	No voltage detected from
• Powered anode rod wiring shorted to ground.	Powered Anode(s).
• The water heater is not properly grounded - see Power Supply
Connections on page 41.	Call a service professional:
• Loose or open ground wires.	Your Company Name Here
• Top fitting (3/4 inch bushing) of the powered anode rods were	(press [DOWN] for more....)
	CHANGE	BACK	ADVANCED
saturated with water during installation - with power to the water
heater turned off, carefully remove anode rods and dry out
bushing(s).

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