The primary fan spins slowly when the water heater is working.
Bosch tankless water heater problems.
How to troubleshoot a bosch tankless water heater no hot water.
Essentially the device only heats water when you need it and it s off when you don t need it.
Connect the supply line to the blue inlet on the water heater.
Inspect the plumbing for restrictions.
The tankless water heaters of bosch use on demand technology which makes them a lot smarter and more energy efficient.
The voltage must be 120 vac and the element correctly grounded.
Ensure that the gas pressure is as required because the low pressure leads to fan rotation problems.
Check the wiring connection on the fan and control board.
Problems with water flow.
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This is unlike conventional tanks that work 24 7 even when there is no demand an.
Inspect the water supply.
This is the place for troubleshooting problems with your gas tankless water heater.