IF YOU HAVE CHECKED SUPPLY VOLTAGE GOING INTO THE UNIT, THEN CHECK THE IMMERSION THERMOSTAT, PROBLEM IS IF HOT WATER CYLINDER IS BELOW THE BOILER YOU HAVE TO REMOVE THE GAS BOILER ABOVE IT, BUT FIRST CHECK THE IMMERSION, IT HAS AN OVERLOAD ON IT IF YOU SWITH OF ALL POWER TO UNIT IT IS POSSIBLE TO REMOVE THE COVER OF HEATER ONCE THAT IS DONE PUT HAND INTO HEATER AND YOU SHOULD FEEL A LITTLE BUTTON UP IT IS LIKE THE END OF BALL POINT PEN PUSH IT DOWN TO RESET IT THEN REPLACE THE COVER AND SWITCH ON THE SUPPLY GOOD IDEA IS TO CHECK THE ELECTRIC METER IT WILL SHOW IF IMMERSION IS USING 3 kW BY DISC ROTATING FASTER THAN NORMAL IF NOT YOU NEED TO CHECK THERMOSTAT IF FAULTY REPLACE IT COSTS ABOUT £45.00
KENBAILEY99@AOL.COM
June 2008