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Fault Finding 10
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R1
43
Check central heating and controls
Ensure that radiator temperature control knob
is set to ver
tical position and that any inter
nal
timer (if fitted) is calling for heat
Check diagnostic code D.08 (see page
53). Is heating demand present?
No
Is 230 V
AC present across ter
minals 4 and 5
No
Exter
nal fault: Check all exter
nal controls are
calling for heat, replace or repair as necessar
y
(see also note 1 sheet A)
Ye
s
Ye
s
Does failure code show on LCD display?
Disconnect built in timer (if fitted)
No
Go to sheet D
Does ignition
commence?
No
Ye
s
Replace defective
timer
Sheet C