Electronic Ignition Water Heater (continued) Effective:

5/26/98

CAUSE

 

SOLUTION

EXCESSIVE OR INSUFFICIENT WATER TEMPERATURES

 

 

 

 

 

 

By-pass kit valves not set properly ----------------------------

Place valves in proper position

Thermostat not seated against tank ----------------------------

Reseat thermostat

Defective thermostat----------------------------------------------

Replace thermostat

ERRATIC BURNER FLAME OR SOOTING

 

 

 

 

 

 

 

 

 

Low gas pressure ------------------------------------------------

Set inlet pressure at a minimum 11˝ W.C. with two or more gas

 

 

 

appliances running

Poor gas supply --------------------------------------------------

Replace gas supply

Improper air adjustment ----------------------------------------

Adjust main burner air shutter approximately 1/4 way open. Flame

 

 

 

should be mainly blue and quiet.

Poor main burner alignment ------------------------------------

Adjust valve and main burner alignment

Misaligned burner flame spreader ------------------------------

Align flame spreader so it is square with end of burner tube.

Blocked burner orifice --------------------------------------------

Clean orifice. DO NOT enlarge orifice

Obstructed main burner------------------------------------------

Clean main burner

Obstructed “U” tube ----------------------------------------------

Clean “U” tube

Obstructed exhaust grille ----------------------------------------

Remove obstruction

NO SPARK AND NO GAS

 

 

 

 

 

 

 

 

 

 

 

 

No voltage --------------------------------------------------------

Correct power supply - minimum 10.5 VDC

Dirty edge connector on circuit board--------------------------

Clean edge connector

Defective thermal cut-off----------------------------------------

Replace thermal cut-off

Defective ON/OFF switch ----------------------------------------

Replace switch

Defective circuit board--------------------------------------------

Replace circuit board

Defective thermostat----------------------------------------------

Replace thermostat

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Atwood Mobile Products 94605 service manual Electronic Ignition Water Heater Effective, Cause Solution

94605 specifications

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