A.O. Smith EQ 155 G, EQ 115 G, EQH 200 G manual Fault finding, Fault Possible cause

Models: EQH 200 G EQ 115 G EQ 155 G

1 32
Download 32 pages 33.44 Kb
Page 24
Image 24

3.2Fault finding

Fault

Possible cause

Gas smell

Pilot

Blocked pilot burner

extinguishes

 

 

Blocked chimney

 

Safety thermostat

 

Thermocouple defective

 

Thermocouple makes no

 

contact

 

Gas supply closed

 

Down draught

 

supervision not

 

connected.

Insufficient

Temperature is set too

hot water, or

low

none at all

Control knob in position

 

 

() (pilot burns )

Control knob in position

(•)

Flue safety device closed the gas supply

Gas supply closed

Corrective action

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

Connect by sliding the two connectors of the down draught supervision on to the thermocouple.

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.

Page 24
Image 24
A.O. Smith EQ 155 G, EQ 115 G, EQH 200 G manual Fault finding, Fault Possible cause