Based on there the circuit board will be able to complete the tasks.
Troubleshooting girard on demand water heater.
Contact your girard dealer or service center if you can t achieve the proper temperatures rises.
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Check and open gas and water valves fully.
Since the girard tankless water heater does not have a tank it does not need to pre heat and store water to 130 to 140 degrees.
Increase the low to lower the temperature and decrease the flow to raise the temperature.
Check the lock nut at the bottom of the blower where the plastic tube attaches.
Reset and check the microprocessor verify that it does not have the flame ensure that the switch is opening the blower is turning on once you detect the combustion air flow you need to open the gas valve and supply the first.
I believe my water pump is a 3 8 gpm unit.
Often this issue is caused by the gas supply so check to make sure your propane tank is full before you do anything else.
If your gas valve or water valves are not fully opened this could also cause the ignition to fail.
Confirm that nothing is blocking the exhaust vent.
Water in the tank im able to add up to 30 cold water to the shower to help control the temp without having the unit cycle from hot to cold to hot.
With both restrictors in the oxegenics shower head removed and with 80 deg.
More rv manufacturers use the girard tankless water heater than all the competitors combined.
Do not turn on the cold water.
On the girard tankless water heater the user turns on only the hot water open to a normal flow and then gradually adjusts the flow to achieve the desire temperature usable hot water.
Connect the 2 wires to the user control panel 2 wires and to the 2 wires on rear of water heater ucp wires are blue or blue green.
Confirm that the plastic tube is connected to the blower and pressure switch.
The mode switch should be set on high.
Update on my girard water heater.