State Industries SHE50-100PE, SHE50-100NE, GP650HTPDT manual Blocked Exhaust Vent

Page 48

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

 

Image 48
Contents Service Handbook Ultra High Efficiency Power VENT/POWER Direct Vent Qualifications Qualified Service Agent Service WarningImportant Service Reminder Tools Required Closed Water Systems Thermal ExpansionAIR Requirements Contaminated AIRVenting Maximum Equivalent Length RequirementsService Notes Venting Pipe Size RequirementsMaximum Elbow Requirements Number Maximum Pipe Elbows Length Feet MetersService Notes Electrical VAC 1Ø Power SupplyCorrectly Wired Outlet Electrical RequirementsHOW IT Works Internal ViewService Notes Blower BlowerService Notes Burner Flame Sensor BurnerBurner & Blower Removal On NextService Notes Blower Flange & Blower Adapter Gaskets Burner/Blower RemovalVenturi BlowerGAS Valve Gas Valve RemovalGasket Orifice GAS Pressure Testing Service Notes Checking Gas PressuresService Notes Gas Pressure Adjustment GAS PressuresGas Pressures AIR Pressure Switches Normal State Activated StateBlower Prover Switch Blocked Intake SwitchBlocked Exhaust Switch AIR Pressure Switch Operation Blower Prover FailureAIR Pressure Switch Testing Normal State TestOperational State Test Air Pressure Switch Parameters Pressure TestBlower Prover Blocked Intake Blocked Exhaust Page Flame Sensing Test Measuring Flame Sensing CurrentFlame Sensor Service Notes Hot Surface Igniters Igniter Current TestControl System Features IntroductionService Notes Button Pad Ribbon Cable UIMCommercial & Residential Product Differences Discreet Menu Contact InformationService Note Sequence of Operation Display Desktop ScreenStatus Icons Status Icon DescriptionOperational States Modes State DescriptionOperating SET Point Adjustment Action DisplayControl System Menus ECO Service Notes CCB Replacement CCBJ10 J13 J15 J11 J16 Socket IdentificationJ3 Socket 120 VAC Power Supply J1 Socket TransformerJ2 Socket 120 VAC To Blower PIN # DescriptionRetry Ext Use Yes Input Type Tstat OpenWiring Diagram Service Notes Polarity & GroundSequence of Operation YESResetting the control system Important Service ReminderRough Starting Rough Operation Note Heater Status MenuControl System Unresponsive UIM Display Is BlankUIM is Inoperable Displayed Message CHECK/REPAIR CONDITION/INDICATESFault Messages AC ReversedFlame Probe Short Upper Probe ShortFlame Detect Error Energy Cut Out ECOBlocked Inlet Blocked Exhaust Vent Perform ALL These Tests with Power Blower Prover OpenTurned on and a Call for Heat Active Low Igniter Current Ignition Failure Rough Starting Rough Operation NoteCheck for 24 VAC to the Gas Valve solenoid coil Gas Valve Failure Communication FailureTennessee Waltz Parkway Ashland City, TN