Hi Fellas, my heater blows luke warm air, ive tried the heater matrix flush, good rate of flow when connected to the garden hose, at the bulk head connection...

tried the test for the flaps no faults showing on the LED.

Im at a loss.. any further tests or bits and bobs i should be looking at to cure this problem.. apart from buying gloves and a woolly hat... winters on its way.

Thanks Ken.