Well, Just for those who might be facing the same problem. I did solve the problem myself :D . The problem lied in the valve motor for hotwater. I check the terminal voltage of the motor, where, when the timer turned on, the voltage started coming, but the valve wasn't turning on. I manually...
Dear dbperce or anyone else,.... I got the same problem.
I got potterton ep2001 timer with honeywell walves and thermostat on tank.
Everything was working fine, until one day when i woke up, found my HW not hot as it should be. turned the HW mannually on, the light of HW lit, but boiler...