Specifications

7 181 465 346 GB (03.02)

Failure identification procedure

3.4.2 Programmer faults

Condensation in the flue pipe

Check Action

1. Is diaphragm in mixer unit fitted cor-

rectly (see installation instructions)?

B Open mixer unit (29).

B Check diaphragm for correct ori-

entation, soiling and splitting.

B Fit diaphragm as per installation instructions or

replace.

B Close mixer unit.

Set room temperature not reached (TR 2 and TR 212 E)

Check Action

1. Thermostatic valve(s) set too low? yes: B Turn up thermostatic valve(s).

↓2.

no: ↓2.

2. CH flow temperature control on

boiler set too low?

yes: B Turn up CH flow temperature control.

no: ↓3.

3. Air in the heating system. B Power OFF the appliance.

B Check appliance and system for water leaks and

repair as necessary.

B Top up system.

B Select Service Function 7.3 .

Select 1 (on, automatically deactivated) and con-

firm.

B Vent appliance.

B Vent radiators.

B Turn ON the appliance.