3.4Fault finding

Failure Cause

Gas smell

Pilot extinguishes

Blocked pilot burner

 

Blocked chimney

 

Safety thermostat

 

Thermocouple defective

 

Thermocouple makes no contact

 

Gas supply closed

Insufficient or no

Temperature is set too low

hot water

 

 

Control knob in position () (pilot

 

burns )

 

Control knob in position ()

 

Flue safety device closed the gas

 

supply

 

Gas supply closed

 

Safety thermostat has closed the gas

 

supply because the water

 

temperature was too high

 

Hot water storage empty

 

Cause cannot be determined

Waterleakage

Condensation of (flue) gasses

 

Insufficient sealing of the water

 

connections (thread)

 

Leakage from other water- appliances

 

or pipes near by

Measure

If you smell gas you should immediately close the main gas tap you should not light any fire or switch on light, electrical switches or bells. Open windows and immediately contact your installer or the local gas company.

Clean the pilot burner

Find the cause and remove it.

Set the temperature regulator at a lower temperature.

Replace the thermocouple

Restore the connection

Open the gas tap

Set the temperature regulator at a higher temperature

Turn the temperature regulator completely clockwise; turn control button to “on” ( ); turn the temperature regulator to the desired position, preferably position 4. The appliance now operates fully automatically.

Put the appliance into operation.

Press the reset button - if present - on the safety thermostat and put the appliance into operation. If this occurs more often then you should inform your installer.

Open the gas tap and put the appliance into operation.

Set the temperature regulator at a lower temperature and reignite the pilot burner.

Reduce the consumption of hot water. Allow the appliance time to heat the water.

Turn the control button to the () position. Close the gas tap and inform your installer.

See “Condensation”.

Tightenthethreadedconnections.

Trace the cause.

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A.O. Smith EQ 280 G, EQ 380 G manual Failure Cause, Measure

EQ 280 G, EQ 380 G specifications

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