Warning

Maintenance may only be performed by a qualified service and maintenance engineer.

Table 10.1 General errors (Sheet 2 of 3)

is

Symptom

Cause

Solution

Remark

 

 

 

 

Display is off

Appliance is turned off.

Start-up the appliance. See ’7.2 Starting up’

 

 

 

 

 

 

 

No electric power

1.

Check whether the mains switch is ON.

See appendix ’A.2 Electrical diagram BFC’.

 

present

2.

Check that there is power to the mains switch.

If the error cannot be rectified, contact your installer.

 

 

 

 

 

3.

Check whether the ON/OFF switch of the ThermoControl is ON

 

 

 

 

(position I).

 

 

 

4.

Check whether there is power to the electrical connection

 

 

 

 

block.

 

 

 

5.

The voltage measured must be 230 VAC (-15%, +10%).

 

 

 

 

 

 

Defective fuse(s)

Replace fuse(s)

To replace the fuses you must contact your installer.

 

 

 

 

Water leakage

Leakage from one of

Tighten the threaded connection.

If the leak persists, consult your installer.

 

the water connections

 

 

 

 

(threaded).

 

 

 

 

 

 

 

 

Condensation water

Check that the condensation water discharge is working properly.

 

 

leakage

Rectify if necessary.

 

 

 

 

 

 

Leakage from another

Trace the leak.

 

 

nearby water

 

 

 

 

appliance or pipe

 

 

 

 

segment.

 

 

 

 

 

 

 

 

Leakage from the

Consult the supplier and/or manufacturer.

 

 

appliance’s tank.

 

 

 

 

 

 

 

 

Release R.1.3 UK

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A.O. Smith 28 30 50 60 Symptom Cause Solution Remark Display is off, See appendix ’A.2 Electrical diagram BFC’