NorthFlo PSNF50 - Page 15

15
Failure code
E 1
High pressure protection
E 2
Low pressure protection
E 3
Low water pressure protection
E 4
3 phase sequence protection (Only for 3phase models)
P 1
Pool water temp sensor failure
P 2
Exhaust temp sensor failure
B.Cool and Heat type: Cooling coil pipe temp sensor failure
P 3
Heating coil pipe temp sensor failure
P 4
Gas return temp sensor failure
P 5
Air temp sensor failure
E 6
Compressor exhaust overload protection (>110℃)
P 7
When the temperature<+32℉, auto stop protection（not Failure）
“HEAT” flashing
Defrosting (not failure)
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