RVtechLibrary.com
Site Links:
Library Contents Search the Library RV Tech Library Help Page Site Map About Us Tiffin RV Network TRVN Classifieds Campground Reviews Photo Gallery TRVN Store
Library Chapters
Appliances Batteries Boondocking/Dry Camping Chassis Clubs & Forums Electrical Electronics Engines Exterior Maintenance Generators Heating & Air Conditioning Interior Maintenance Misc Items Operating Tips Plumbing Red Bay Safety & Health Storage Supplier Contacts Tires and Wheel Rims Towing Transmissions Weighing

 

Troubleshooting
Water Heater Ignition Systems

 


WATER HEATER LOCK OUT - SPARK PRESENT BUT NO GAS
CONDITION SOLUTION
Gas pressure incorrect Set inlet pressure at a minimum 11" W.C. with two or more appliances running
Low voltage Correct power supply - 10.5 VDC minimum
Blocked main burner tube Clean burner tube
Blocked main burner orifice Clean or replace orifice
Loose wires on E.C.O. Secure wire connections
Loose wire connections on solenoid valve Secure wire connections
Loose valve wire on wiring harness Repair wire on edge connector or repair wiring circuit board harness
Defective E.C.O. Replace E.C.O.
Defective circuit board Replace circuit board
Defective solenoid valve Replace coils or solenoid valve
No gas to solenoid valve Correct gas supply
Dirty connector on circuit board Clean edge connector

WATER HEATER LOCK OUT - GAS PRESENT BUT NO SPARK
CONDITION SOLUTION
High tension lead wire loose Secure wire connection on circuit board
Electrodes loosely attached to burner Secure electrodes to main burner
Improper electrode gapping Re-position spark gap to 1/8"
Dirty electrodes Clean electrodes
Wires loose in electrode porcelain Replace electrode
Cracked porcelain on electrode Replace electrodes
Defective circuit board Replace circuit board

WATER HEATER LOCK OUT - GAS AND SPARK PRESENT
CONDITION SOLUTION
Gas pressure incorrect Set inlet pressure at a minimum 11: W.C. with two or more gas appliances running
Low voltage Correct power supply - 10.5 VDC minimum
Poor electrical ground Secure electrical ground
Electrodes out of flame pattern Re-adjust electrodes
Electrodes sparking to screw fastening burner to flue tube Adjust electrodes
Dirty electrodes Clean electrodes
Partial obstruction in main burner Clean main burner
Partially obstructed main burner orifice Clean main burner orifice
Improper air adjustment Adjust main burner air shutter approximately open or greater
Flame spreader on main Adjust flame spreader so that it is square to the end burner tube out of alignment of the main burner
Manifold no aligned with main burner Re-align solenoid valve with main burner
Partially opening solenoid valve Replace solenoid valve
Defective circuit board Replace circuit board

EXCESSIVE OR INSUFFICIENT WATER TEMPERATURES
CONDITION SOLUTION
Bypass kit valves not set properly Place valves in proper position
Thermostat not seated against tank Reseat thermostat
Defective thermostat Replace thermostat

 

Submitted by Mike Sundberg - 3/17/06


The RV Tech Library is brought to you by the TiffinRVnetwork

Absolutely No Affiliation exists between this group and Tiffin Motor Homes Inc or the Allegro Club. This website neither endorses or discourages the use or purchase of a Tiffin product. All references, suggestions, comments, etc. contained herein are the opinions/experiences of the posters and not those of Tiffin Motor Homes Inc. or the website administrators.

 Freightliner Custom Chassis       Spartan Chassis       Workhorse Custom Chassis       Ford Chassis
 

 
©Copyright 2014 TiffinRVNetwork All Rights Reserved