State GPH-90N - Manual (Page 29)

Service Instructions
0610 29 319172-000 Rev. 00
GAS WATER HEATERS
SPARK GENERATOR REPLACEMENT
This instruction has been prepared to acquaint you with the service of your gas-fi red water heater. It is your responsibility to
ensure that your water heater is properly installed and maintained.
Failure to follow the instructions in this service instruction sheet may result in serious bodily injury and/or property
damage. Thoroughly read and understand all instructions before you attempt to install, operate or service this heater.
Maintenance and service requires trade knowledge in the areas of plumbing, electricity and gas. If you lack these skills or
have diffi culty understanding these instructions you should not proceed. Enlist the help of a qualifi ed service technician to
service this water heater.
To Remove:
Disconnect the electrical power to the water heater.
Unlock the door by rotating the lock counter-clockwise
with a wide, slot screwdriver.
Release the top and bottom door pins by prying the pins
out, using a small screwdriver.
Open the door (the door remains fastened to the left
side panel).
Remove the ten screws that secure the front cover of
the heat engine. Remove the front cover of the Heat
Engine.
Remove the two screws securing the circuit board and
partially extract it.
Carefully disconnect the Spark Generator wiring harness
plug from the circuit board.
Remove the screw securing the Ground Lugs.
Remove the screw securing the Spark Generator.
Remove the two screws securing the Electrode assembly.
It may be necessary to remove the Power Cord to gain
access to the two screws.
Carefully disconnect the wire harness from the Spark
Generator.
Remove the Spark Generator, Electrode assembly and
Gasket. Ensure old gasket is completely removed and
no material remains.
To Install:
Carefully reconnect the wire harness to the new Spark
Generator.
Secure the Electrode assembly and Gasket with the
two screws.
Secure the Spark Generator with the screw.
Secure the Ground Lugs with the screw.
Carefully reconnect the Spark Generator wiring harness
plug to the circuit board.
Slide the circuit board into its proper position and secure
using the two screws.
Reassemble the front cover of the Heat Engine.
Close and lock the door.
Reconnect the electrical power to the water heater.
Restart the water heater following the “Lighting
Instructions” found in the Operating Manual.
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Access To
Door Pins
Door
Lock