Low
P.13 on Vaillant aquaPLUS

Your boiler is currently running a special setup routine to calibrate the gas pressure for Liquid Petroleum Gas (LPG) operation.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Setting-up program: LPG (G30/31) mid setting point pressure

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 →

Related fault codes

P.11View →P.12View →

Related guides you might find useful

Boiler keeps losing pressure

Six most common causes of dropping pressure.

Read →

Pilot light keeps going out

Older boilers — thermocouple, draught, gas supply.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →