Unknown
Lack of power supply or faulty electr. control p.c.b. on Biasi Parva HE Combi

Biasi Parva HE Combi fault code Lack of power supply or faulty electr. control p.c.b.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

What the manual says

Manufacturer manual

Lack of power supply or faulty electr. control p.c.b.

From this model's manual
Verified against the Biasi/Biasi Biasi Parva He M96 24sm 28sm 32sm P Installation Servicing Instructions Manual installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer
Search the official register →
Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like Lack of power supply or faulty electr. control p.c.b.: no call-out fees, no surprise bills.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

All 10 fault codes on the Parva HE Combi

Seeing a different code? Every code this model can display, in one place.

Excessive temperature on primary circuitFaulty air pressure switchFaulty c.h. temperature probe NTCFaulty d.h.w temperature probe NTCFaulty flue temperature probe NTCFaulty primary circuitFlue temperature probe NTC lockoutLack of burner ignitionSafety thermostat lockout

Related guides you might find useful

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →

When to replace your boiler

7 signs repair isn't worth it anymore.

Read →

New boiler cost 2026

Realistic UK prices for a swap.

Read →