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I have a Pentair pool heater. It fires up and starts heating

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and about a minute later...
I have a Pentair pool heater. It fires up and starts heating and about a minute later shuts down and go's to service heater light. You have to power off to get board unlocked. When power it back up the only codes that appear are 128 and R=8
Submitted: 1 year ago.Category: Pool and Spa
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Answered in 7 hours by:
4/21/2016
Pool and Spa Expert: tomen99, Handyman replied 1 year ago
tomen99
tomen99, Handyman
Category: Pool and Spa
Satisfied Customers: 111
Experience: Certified pool operator and maintenance supervisor
Verified
I know it sounds elementary but I would start by cleaning out the combustion chamber and taking a scour pad to the flame sensor. Also make sure you are getting proper water flow through the unit and there are no obstructions on the inlet or exhaust air pipe.
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Customer reply replied 1 year ago
I by passed water flow sensor and still fired up and then shut down and went to service heater. I checked intake and exhaust intake/outlet and no obstructions. Where is the flame sensor located exactly? It is firing up and starts to heat then shuts down after a few seconds as heater light goes on. No error codes are showing on panel and no bilking light red light on control box inside heater.
Pool and Spa Expert: tomen99, Handyman replied 1 year ago
It will be by the pilot assembly. You should try to vacuum or blow out that area too
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Customer reply replied 1 year ago
These have not fixed my issue with the heater
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tomen99
tomen99
tomen99, Handyman
Category: Pool and Spa
Satisfied Customers: 111
111 Satisfied Customers
Experience: Certified pool operator and maintenance supervisor

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