I HAVE A POTTERTON PUMA 100E.
MY PROBLEM IS I HAVE NO HEATING OR HOT WATER
I HAVE FOLLOWED THE HEATER DIAGRAM AND IT LED ME TO THE HOT WATER FLOW SWITCH AND THE WATER PRESSURE SWITCH SO I CHANGED BOTH BUT STILL THE BOILER WON'T IGNITE AND WHEN I SWITCH ON THE HOT WATER TAP A RED LIGHT GOES ON, ON THE MODULE BOARD, I CAN HEAR ALL THE SWITCHES CLICK ON WHEN I TURN THE BOILER ON AND OFF, THE TAPS ON AND THE CENTRAL HEATING ON. I CAN HEAR THE FAN WORKING AND THE MOTOR WORKING WHEN I CALL FOR HOT WATER. THERE IS NO HOT WATER PRESURRE WHEN THE TAPS ARE ON.
IS THERE ANYBODY WHO CAN HELP PLEASE?

RICHARD, January 2006

HI GRAHAM JUST THOUGHT I'D LET YOU KNOW YOU WERE RIGHT FIRST TIME IT WAS THE MAIN CIRCUIT BOARD MANY THANX

RICHARD, January 2006

hi again,
sorry could also be the air pressure switch top left hand corner

graham, January 2006

hi,
sounds like the main circuit board or less likely the gas valve. puma circuit boards are the least reliable item known to man...

graham, January 2006