Girard Products GSWH-2 Technical Manual page 17

Girard GSWH-2: E-1 Code/Gas Valve Trouble-Shooting and R&R
The E1 fault code tells you that the water heater tried to ignite twice but did not ignite. An E1 fault code is not always
caused by a failure of the gas valve to open. Additional diagnosis needs to be performed since this fault code may be caused
by a number of issues. The other causes are listed below and in the owner's manual.
E1: Ignition failure or accidental flame off during ignition.
If the established flame signal is lost while the burner is operating, the control will respond within 0.8 seconds, the gas valve is de-energized and a new
inter-purge and ignition routine will begin. If the burner does not light, the control will de-energize the gas valve and will make one more attempts to
relight the burner. If the burner does not relight after the two trials the control will go into LOCKOUT and the unit will need to be turned off before it can
operate again. Turn hot water faucet OFF and back ON to reset (you should try this cycle 3 times). Not lighting could occur for a number of reasons.
The most common are:
• Lack of Gas in the tank
• Faulty Igniter
• Faulty Igniter connections
• Improper distance between the Igniter and the Burner
• Accumulated dirt or obstruction between
• Igniter and Burner
• Low Gas Inlet pressure
Diagnosis of an E1 fault code
Igniter posts
1. Confirm that gas has purged through the entire gas plumbing system
by lighting the range and resetting the water heater a minimum of
three times.
2. Confirm that the spark is occurring at the tips of the igniter.
Visually inspect the igniter for obstructions or debris
3. Smell for the scent of gas from the exhaust during the two
trials for ignition.
4. Check the brown and black wires on the 8 pin wire connector at
the bottom right side of the board to ensure integrity. Unplug the
connector, gently pull on the brown and black wires. Visually
inspect the connector and plug it back in.
CN9 Connector
Gas Valve Wires are the Brown and Black wires
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