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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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My Raypak 2100 also has the failure code PRS. I totally

Customer Question

My Raypak 2100 also has the failure code PRS. I totally cleaned the DE filter and the pump and si
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: skimmer basket.
JA: Do you plan on doing the work yourself?
Customer: This is the first time turning the heater on since last summer.
JA: Anything else we should know to help you best?
Customer: Is is possible that the pressure switch needs to be replaced?
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the HVAC Technician about your situation and then connect you two.
Submitted: 1 year ago.
Category: HVAC
Expert:  Phil replied 1 year ago.

Hello. yes it could be a bad pressure sensor or printed circuit card. It could also be algae clogging the heat exchanger in the boiler.

If you can send me a photo of the unit wiring diagram glued to one of the service panels, taken up close, very well focused and straight on, then post it here using the paper clip icon at the right end of the tool bar, I can coach you on an exact diagnosis.

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