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My trane R-410a is not cooling and shows 'PH' on the display…

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My trane R-410a is not...
My trane R-410a is not cooling and shows 'PH' on the display on the unit. What could the problem be? It is only 1 month old. Thank you.
Submitted: 2 years ago.Category: HVAC
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1/25/2016
HVAC Technician: airheatman, HVAC Technician replied 2 years ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,542
Experience: Furnace, A/C and heat pump specialist.
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What is model on controller with the PH on it?

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