Alpha’s reply: We do not encourage such move because you might face many customer complains in the future due to nuisance trip. Nuisance occurs under one of these situations: User taking shower with full power and then turn off the stop valve of heater to apply shampoo / soap the residual heat in the heater canister could be high enough to activate the thermostat, when the user turn on the stop valve to wash away the soap he/she would notice that the heater is not working and they will complain the heater malfunction. Furthermore, the method of increasing thermostat’s sensitivity would not help much to solve the problem.