State Industries SHE50-100PE “Blower Prover Failure”, Fault Messages Cont, “Blocked Exhaust Vent”

ULTRA HIGH EFFICIENCY POWER VENT/POWER DIRECT VENT - SERVICE MANUAL

FAULT MESSAGES (CONT)

DISPLAYED MESSAGE	CHECK/REPAIR
CONDITION/INDICATES
“Blocked Exhaust Vent”	• Check for restrictions, too many equivalent feet,
	or too many elbows in the vent pipe. Ensure
The control system has detected open contacts at	• Review venting installation section of the
the Blocked Exhaust air pressure switch - the water	Instruction Manual that came with the water
heater is not venting properly.	heater - see Table 1 on page 7 in this manual.
	Ensure the vent/intake air piping has been
	installed within manufacturers requirements.
	• Check all wiring between the Blocked Exhaust
	air pressure switch and the CCB’s J6 Socket
	(page 36) pins 5 & 10. Perform close visual
	inspection of the pins inside the plug and socket
	- ensure plugs and sockets are mating properly
	and providing good contact. Repair/replace any-
	thing worn or damaged.
	• Review the air pressure switch information
	beginning on page 18. Perform the pressure
	switch test procedure for the Blocked Exhaust
	air pressure switch - see pages 21 through 23.
	Replace the Blocked Exhaust switch if defec-
	tive.
	• Call the technical support phone number shown
	on the water heater labeling for further assis-
	tance if the problem has not been corrected
	after performing the procedures outlined here.
“Blower Prover Failure”	• Check all wiring between the Blower Prover air
	pressure switch and the CCB’s J6 Socket (page
The control system has detected closed contacts at	36) pins 6 & 7. Ensure there are no shorted or
	pinched wires.
the Blower Prover air pressure switch out of
sequence. Blower Prover air pressure switch	• Ensure there are no jumper wires installed on
contacts should be open at the beginning of each	the Blower Prover switch.
heating cycle - see the Sequence of Operation on	• Ensure there are no jumper wires installed
page 40.
	between the CCB’s J6 Socket pins 6 & 7.
	• Review the air pressure switch information
	beginning on page 18. Perform the pressure
	switch test procedure for the Blower Prover air
	pressure switch - see pages 21 through 23.
	Replace the Blower Prover switch if defective.
	• Call the technical support phone number shown
	on the water heater labeling for further assis-
	tance if the problem has not been corrected
	after performing the procedures outlined here.

Technical Literature Department	47 of 52	Ashland City, TN © 2008
Servicing should only be performed by a Qualified Service Agent