Blinking red light no heat

No gas pressure will not be affected by your meter. its a heat sensor problem .

that would indicate that the boiler is not firing up
If oil fired, been there done that
it is out of oil
the oil filter is clogged
the nozzle could be clogged/burned
the igniter wires need adj/replacement

if gas fired - similar issues but no experience

your boiler needs a minimum gas pressure of 16 mb to light successfully. if your gas pipe has been extended it has to be able to flow enough gas. it may need upgrading to 28mm for even as little as a metre from the gas meter. if your central heating works ok when the fire is off then this is your problem

check the pcb.

Check the flow switch. Small black box lower left hand side as you face the from of the unit. Try to jump the connection and then see if it fires up. If it does, replace your flow switch. The flow switch prevent the boiler from firing because it is not sensing the water moving through the pipes. The boiler won't fire if water is not moving through it.

Craig @ Aggie Plumbing & Service

Hello,The fuel does not matter as the probe senses water temp of boiler.Yes

It doesn,t like your boyfriend

Is this appliance a gas fired or oil fired. Steam or hot water

Your should be able to find the information here. Don't forget to check under discontinued products. www.glow-worm.co.uk