IDEAL Evomax 30 Installation & Servicing Manual page 57

87 no CH but DHW ok
Is the boiler set for Winter operation?
yes
Are the Timer and Room Thermostat calling for Heat?
yes
Are the Radiator Valves open?
yes
Is an OpenTherm device connected to the boiler (note
that the Ideal Prog Room Stat is an OpenTherm device)?
no
Is there 230Vac at (A)?
yes
Is there 230Vac at (B)?
yes
Does wiring to external CH Pump have continuity and is
to the correct connections?
yes
Is the CH pump stuck
yes
Free the pump
EVOMAX -
Installation & Servicing
fAuLt fInDInG
There is no voltage from the Timer/
no
Room Stat. This is not a boiler fault.
Ensure voltage is supplied to the
boiler by correcting external wiring
(A)
no
Set for Winter operation (see Frame 36)
no
Ensure that the Timer and Room
Thermostat are calling for heat
no
Open the Radiator Valves
yes
Does the wiring from the boiler to the
OpenTherm device have continuity?
Rectify wiring from boiler
to OpenTherm device
no
Check wiring from PCB to (B)
no
Rectify wiring to external CH pump
no
Replace the CH pump
(B)
no
yes
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