Pentair ULTRATEMP HXi, Owner'S Manual

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Page 31
Code Fault Message Possible reasons Remedy
P09 Antifreeze Temp. Sensor
Fault Antifreeze temp sensor is
broken or short circuited. Check or change the tem-
perature sensor.
PP Pressure Sensor Fault The pressure sensor is bro-
ken. Check or change the pres-
sure sensor.
E01 High Pressure Prot. The high-pressure switch is
open circuit. Check the pressure switch
and cold circuit
E02 Low Pressure Prot. Low pressure protection Check the pressure switch
and cold circuit
E03 Flow Switch Prot. No water or low water flow in
the system. Check the pipe water flow
and water pump is on and
primed.
E05 Waterway Anti-freezing Prot. Water temperature or ambi-
ent temperature is too low
E06 Inlet and outlet temp. too big Water flow is not enough and
low differential pressure
Check the pipe water flow
and whether water system is
jammed or not.
E07 Anti-freezing Prot. Water flow is not enough Check the pipe water flow
and whether water system is
jammed or not
E19 Primary Anti-freezing Prot. The ambient temperature is
low
E29 Secondary Anti-freezing P
rot. The ambient temperature is
low
E051 Comp. Overcurrent Prot. The compressor is overload-
ed. Check whether the system
of the compressor running
normally
E08 Communication Fault Communication failure
between display and main-
board. Check the wire connection
between remote display and
main board.
E081 Communication Fault
(speed control module) Speed control module and
main board communication
fail Check the communication
connection
TP Low AT Protection Ambient temp. is too low
F051 EC fan feedback Fault There is something wrong
with fan motor and fan motor
stops running. Check whether fan motor is
broken or locked rotor.
F031 Fan Motor1 Fault 1. Motor is in locked-rotor
state.
2.The wire connection be-
tween fan controller and fan
motor is in poor contact. 1.Change a new fan motor
2.Check the wire connection
and make sure they are in
good contact
Maintenance & Troubleshooting
System Protections / Error Codes (Continued)