need help asap?

When you open a tap, without the CH on, does a red light on the modulator board come on? This is the pcb behind the front switch panel with the front cover off.
If no, replace HW flow switch.
If yes, is the heat going down the CH flow pipe?
If yes, the wax capsule on the diverter is gone and needs changing.

Carefree
July 2010