is

 

 

 

 

 

Code + Description

Cause

Solution

Remark

 

 

 

 

 

 

S18 (blocking error)

Short circuit in sensor

Replace sensor S1

To replace the necessary parts, you must contact your installation

 

Short circuit in temp.

circuit

 

 

engineer

 

sensor S1 in the

 

 

 

 

 

collector

 

 

 

 

 

 

 

 

 

 

F01 (blocking error)

Live and neutral

Connect live and neutral correctly (3.11 "Electrical connection");

See the SGE electrical diagram (17 "Appendices")

 

 

connected wrong way

the appliance is phase-sensitive

 

 

Defect in power supply

round

 

 

 

 

circuit

 

 

 

 

 

Condensation on the

1.

Disconnect the lead at the flame probe

If errors persist, contact your installation engineer

 

 

 

 

flame probe

2.

Ignite the appliance three times, with an interrupted ionisation

 

 

 

 

 

 

 

 

 

circuit

 

 

 

 

3.

Reconnect the ionisation lead to the flame probe

 

 

 

 

4.

Ignite the appliance again

 

 

 

 

5.

The repeated ignition attempts will have caused the

 

 

 

 

 

condensation to evaporate

 

 

 

 

 

 

 

 

Floating neutral

Install an isolating transformer (3.11.4 "Isolating transformer")

Contact your installation engineer to have an isolating transformer

 

 

 

 

 

installed

 

 

 

 

 

 

 

F02 (lock out error)

Defective motor and/or

1.

Check the motor and rotor

See the SGE electrical diagram (17 "Appendices")

 

Fan fails to run at

rotor.

2.

Replace the fan if the motor or rotor is defective.

 

 

 

To have the wiring replaced and a new fan fitted, you must contact

 

 

3.

Reset appliance controller

 

correct speed.

 

your installation engineer

 

 

 

 

 

 

 

 

Damaged wiring

1.

Check the wiring between the fan and the controller.

 

 

 

 

2.

If any wires are damaged, the wiring harness must be replaced.

 

 

 

 

3.

Reset appliance controller

 

 

 

 

 

 

 

 

 

Dirty or blocked fan

1.

Check if the fan is dirty

 

 

 

 

2.

Check that the rotor can rotate freely

 

 

 

 

3.

Reset appliance controller

 

 

 

 

 

 

 

 

 

Because of a drop in

1.

Check the supply voltage, this must be 230 VAC (-15%, +10%).

 

 

 

the supply voltage, the

2.

Reset appliance controller

 

 

 

fan is not running at the

 

 

 

correct speed.

 

 

 

 

Instruction manual SGE

83

Page 83
Image 83
A.O. Smith SGE Code + Description Cause Solution Remark S18 blocking error, F01 blocking error, F02 lock out error