Baxi Solo 3 PFL 40 connected to Boilermate 2000 system.No hot water or heating,no hot water stored in Boilermate but lights on & appears to be working - checked fuses, sensors & no obvious burns on pcb so would appear it's not being supplied by the Baxi.Baxi has no lights on, checked power supply, fuses & pcb (which was replaced few months ago).Potentiometer also seems to be working. However, when checking wiring, discovered that system works when wire from switch live connected to permanent live! Have put separate connection between the two & got hot water & heating but still not sure what the fault is, how to sort it properly & if temporary repair a safe one!Can anyone help?

Yvonne, March 2012

there is an in line fuse on the boilermate pcb which supplies the boiler (baxi), it may have popped.

Ian, March 2012

Hi Yvonne - check electrical supply to your Baxiboiler - remove grey cover to LHS of control knob - take care here live voltage! If the Boilermate is 'calling for heat' from your Baxi boiler then the contact marked SL (switched live) should have 240 volts AC. If not then problem is in boilermate - its not sending the voltage needed to start up the boiler.
As there are no orange lights on your boiler i suspect this is the problem. Boilermate has 2 small PCBs inside it under the metal plate. If they are buzzing then suspect faulty.

Gas58man, March 2012