Plumbing Questions? Ask a Plumbing Expert.
Hi my name is ***** ***** I have been in the plumbing field for 20 years. I will be glad to help you today. There is a common issue with these particular water heaters. They develop a leak in the evaporator coil and since there is a low amount of coolant in the coil, the evaporator freezes and it triggers the filter alarm because of the poor circulation. I would first try leaving it off for 24 hours to allow the coil to thaw. Otherwise, if it is still under warranty it will certainly be a warranty issue repair. The refrigerant would have to be removed and the leak repaired or may possibly be fixed without removing the coolant and coolant added. Unfortunately the repair is not a DIY repair as the coolant can only be purchased by a licensed tech.
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