House has 7 year old megaflo. Bath has separate thermostat fitted into wall. Can turn to cold. Ok water cold. But when set to hottest temp on thermostat then turn on separate wall fitted bath tap or shower it only comes out lukewarm water.
So all baths and showers are cold. Sink tap is hot as it should be.
Do I need to change shower/bath tap & thermostat tap? Is this possible when there is no sign of brand or make of taps? Or does changing taps mean I'd need to retile bathroom. Surely not! Please help,

Looby, December 2010

probably can't cope with the extra cold water coming into the house put the thermostat to maximum remove on/off knob and thermostat lever then replace the thermostat lever in the cold position and turn until the water is hot refit the lever in the maximum position if the water won't get hot either thermostat is faulty or the filters may need cleaning

brian, December 2010