Hayward AccessLine HP3051DT3HM, Installation Instructions Manual

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6. APPENDICES (continued)
6.3 Troubleshooting guide
Fault Error codes Description Solution
Water inlet sensor fault
P01
The sensor is open or has
short-circuited.
Check or replace the sensor.
Water outlet sensor fault
P02
The sensor is open or has
short-circuited.
Check or replace the sensor.
Outside temperature sensor
fault
P04
The sensor is open or has
short-circuited.
Check or replace the sensor.
De-icing sensor fault
P05
The sensor is open or has
short-circuited.
Check or replace the sensor.
High pressure protection
E01
Refrigerating circuit pressure
too high or water flow too low
or coil obstructed or air flow
too weak.
Check the high pressure switch
and the refrigerating circuit
pressure.
Check the water or air flow.
Check the flow controller is
working properly.
Check that the water inlet/outlet
valves are opening.
Check the by-pass settings.
Low pressure protection
E02
Refrigerating circuit pressure
too low or air flow too weak or
coil obstructed.
Check the low pressure switch
and the refrigerating circuit
pressure to see if there is a leak.
Clean the coil surface.
Check the fan rotation speed.
Check the free circulation of air
through the coil.
Flow sensor fault
E03
Insufficient water flow or
sensor short-circuited or faulty.
Check the water flow, check the
filtration pump and flow sensor
for any faults.
Temperature difference too
great between the outlet and
inlet water (Cooling mode)
E06
Insufficient water flow volume,
water pressure difference too
low/too high.
Check the water flow or for a
system obstruction.
Antifreeze protection
E07
Water output temperature
< 4°C.
Stop the heat pump, empty the
condenser, risk of freezing.
Communication problem
E08
LED controller or PCB
connection fault.
Check the wiring.
Level 1 antifreeze protection
E19
2°C< Water temperature < 4°C
and Air temperature < 0°C.
Turn off the heat pump and drain
the capacitor. Freezing risk.
Level 2 antifreeze protection
E29
Water temperature < 2°C
and Air temperature < 0°C.
Turn off the heat pump and drain
the capacitor. Freezing risk.
Operating limit reached
tP
Ambient temperature < -2°C. Turn off the heat pump and drain
the capacitor. Freezing risk.
Defrosting in progress
dF
/ No default.
Please wait the end of
defrosting.
Certain operations must be performed
by an approved engineer.