GoneFishing70
New Member
I have a Navien CH 240 combi boiler set-up that was installed about 10 years ago. On the boiler side it is piped to a coil in my furnace. Recently it started to show code E002 code - low pressure. This occurs on the boiler side and it shuts down the DHW side. I am able to get it to reset by turning off the furnace and boiler for 10 minutes after which I can get the DHW to work again. Runs fine for the day with the heat (30-35psi) and then it kicks out the same error code after several hours. Pressure on the DHW side is 20-25psi.
Any suggestions on where to start with this one? Thanks in advance.
Any suggestions on where to start with this one? Thanks in advance.