A.O. Smith ADM - 60 Installation Manual | Page 55

A.O. Smith Water Heater Installation Manual - ADM - 60.
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Instruction manual ADM

55

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11

Troubleshooting

11.1 Introduction

This chapter deals with the following problems with the appliance:

Gas smell.

Water leakage.

Explosive ignition.

Poor flame profile.

No hot water.

Insufficient hot water.

11.2 Error conditions

If the water heater goes into an "error" condition, you will be unable to draw hot 
water. The frost protection will also be out of operation. These error conditions 
are divided into three groups:

Lockout error from the flue gas thermostat
The safety (pushbutton) on the flue gas thermostat in the draught diverter 
has been activated. After removing the cause, the pushbutton (7.6 "Burner 
control reset button")
 must be pressed to restart the appliance.

Lockout error from the flue gas thermostat
When this happens, the red LED on the control panel will be illuminated. The 
burner control is locked out.
After eliminating the cause, the appliance must be returned to service by 
pressing the reset button (7.6 "Burner control reset button").

Blocking errors
You can recognise this condition from the fact that the appliance does not 
start running even though the water temperature is lower than the setting 
that you have defined using the control thermostat (7.5 "Control 
thermostat")
.
These errors disappear automatically once the cause of the error has been 
removed, after which the appliance resumes operation by itself.

The following pages provide troubleshooting tables for each type of error.

Note
 Footnotes referred to from within any table are shown at the bottom of the 

last page of that table.

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