How do you troubleshoot a Bosch tankless water heater?

Check to see if the water path has any obstructions. Make sure that all showerheads, faucet aerators and whole house filters are clear of debris. Verify that the gas type of the heater is similar to the gas that is being supplied. Check the inlet gas particle screen for blockage.

How do I reset my Bosch water heater?

How To Reset Bosch Hot Water System. To reset your system, disconnect the power, remove the cover on the water heater. Then you’ll need to reset the high-temperature thermal cutout. It sounds complicated, but all you need to do is push the reset button in the center of the cutout, and then reconnect the power.

How do you vent a Bosch tankless water heater?

The Bosch T9900 & T9800 models can be vented horizontally out the sidewall of the home or vertically through the roof. The venting connection and intake hole is on top of the unit and is 2″ diameter. The Bosch Greentherm T9900 & T9800 series heaters can be vented using 2″, 3″ or 4″ PVC, CPVC, PP or ABS.

Why is my tankless water heater not heating?

My Gas Tankless Water Heater Won’t Ignite Check the gas valve and ensure that it is open, and that you have paid your gas bill. Check all sensors, wiring fuses, and electrical components to ensure they have not burned out. Ensure there is no condensation or debris on the burners that may cause them to not ignite.

Why does my tankless water heater keep going cold?

A broken flow sensor can cause your tankless water heater to run hot and cold. The flow sensor measures the water entering your system and sends that information to your unit’s control board. If there’s a burst of cold coming into the system, then the controller adjusts the flame.

How do I change the temperature on my hot water heater?

Start by turning off power to the water heater at the circuit breaker. Find the access panel for the thermostat(s) and use a screwdriver to remove the panel. Peel back the insulation. Use a flathead screwdriver to adjust the thermostat up or down.

Why is my gas water heater not turning on?

A faulty or loose thermocouple, air in the gas line, or a defective gas valve may also be the source of the problem. Contact a professional plumber or water heater technician to inspect and rectify the issue.

What Bosch model numbers mean?

A = Ascenta, 5 = 500 Series, 8 = 800 Series, and P = Benchmark. The eighth digit tells what color the machine is. 5 = Stainless, 6 = Black, 2 = White, and 3 = Panel Ready.