WebMar 27, 2024 · However, combi boilers are prone to the common problem of causing the hot water to go cold or lukewarm and then back to hot again. Symptoms like these are … WebPlumbing, Heating & Solid fuel. It is possible that your cold water on the mixer taps is weeping into the hot supply when the taps are turned off therefore cooling the water in …

Intermittent hot water from combi boiler - MyBuilder

WebJan 23, 2011 · hi, i have a vokera linea24 combi boiler, its about 4 maybe 5 years old. my problem is the water!! the heating seems fine but the water keeps going hot and cold so for example when taking a shower its a case of get wet while its warm, lather up while its cold then rinse off when it gets warm again.. pretty annoying. when i turn on the hot tap … WebWhen the hot water is up to temperature on the tank thermostat the radiators still don't get hot until I turn the heating off then the hot water off then on and off again. Then turn the heating on again and it works OK. I have a 3 position zone valve and this makes a banging noise when the water is first turned on. george hinton crossley iii md

plumbing - What could cause my radiators to go cold when the hot water …

WebJan 15, 2024 · The boiler's automatic filling system, controlled by the pressure-reducing valve, should maintain the proper water level at 12 to 15 psi of pressure. If there isn't a pressure-reducing valve, manually feed … WebOct 15, 2024 · In view of this info suggest running tap at full flow until water hot then gradually reduce the flowrate until the water runs cold, measure this flow. "Engineer says Combi boilers can only provide hot water if the turbine is spinning at max speed so you have to open the tap at 100% to get hot water. So he removed (broke) the flow restrictor … WebNov 15, 2024 · When the heater runs hot, then cold, then hot again, it is referred to as a cold water sandwich. Two water demands have been placed on the system back-to-back. Either space out the water demands … george hinton waseca mn