No Dhw But Ch Ok; Blank Display - Ideal Heating VOGUE MAX COMBI 32IE Installation & Servicing

4.15 NO DHW BUT CH OK

Does the display show "ON" underneath the tap
symbol?
Are the flow rates correct as per Table 3
Does the wiring from the Main PCB to the Diverter
Valve have continuity and is it fully connected
Check diverter valve head fully engaged and clip
secured onto waterset
Replace Diverter Valve head, is DHW OK?
Replace Diverter Valve body

4.16 BLANK DISPLAY

Is there 230Vac to the boiler at (A)?
Is the wiring from the boiler terminal block to the main
PCB connected securely?
Does the wiring from the boiler terminal block to the
Main PCB have continuity?
Is the cable from the main PCB to the user interface
PCB connected securely?
Does the cable from the main PCB to the user
interface PCB have continuity and is it un-damaged?
Is the Fuse on the main PCB OK?
Replace the user interface PCB, still no display?
Replace main PCB
72
SECTION 4 - FAULT FINDING
No
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Ensure cold inlet and hot
water outlet are not reversed
Is the wiring connected between the
Main PCB and the DHW Turbine?
No
Remove Turbine and clear any
debris, is DHW OK?
Adjust flow rates to achieve 35
No
temperature rise and check filter fitted in
turbine is not blocked with debris
No
Replace or reconnect as appropriate
Re-engage diverter valve head and
No
secure clip to waterset
Supply power to the boiler
Connect the wiring from the terminal
block to the main PCB securely
Replace the wiring from the boiler
terminal block to the Main PCB
Connect the cable from the main PCB to
the user interface PCB securely
Replace cable from main PCB to user
interface PCB
Replace Main PCB
Yes
Re-connect wiring
No
Fit new turbine
o C
A
Installation and Servicing