Troubleshooting Guide - Hayward HeatRelax Installation And Instruction Manual

6. APPENDICES (continued)

6.4 Troubleshooting guide

Fault
Water inlet sensor fault
Water outlet sensor fault
Outside temperature sensor
fault
De-icing sensor fault
High pressure protection
Low pressure protection
Flow sensor fault
Temperature difference too
great between the outlet and
inlet water
Cold mode protection
Communication problem
Level 1 antifreeze protection
Level 2 antifreeze protection
30
Error codes Description
The sensor is open or has
P01
short-circuited.
The sensor is open or has
P02
short-circuited.
The sensor is open or has
P04
short-circuited.
The sensor is open or has
P05
short-circuited.
Refrigerating circuit pressure
too high or water flow too low
E01
or coil obstructed or air flow
too weak.
Refrigerating circuit pressure
E02 too low or air flow too weak or
coil obstructed.
Insufficient water flow or
E03
sensor short-circuited or faulty
Insufficient water flow volume,
E06 water pressure difference too
low/too high.
E07 Water output quantity too low.
LED controller or PCB
E08
connection fault.
Air and inlet water temperature
E19
too low.
Air and inlet water temperature
E29
even lower.
Certain operations must be performed
by an approved engineer.
Check or replace the sensor.
Check or replace the sensor.
Check or replace the sensor.
Check or replace the sensor.
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.
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.
Check the water flow, check the
filtration pump and flow sensor
for any faults.
Check the water flow or for a
system obstruction.
Check the water flow rate or the
temperature sensors.
Check the wiring.
Turn off the heat pump and drain
the capacitor. Freezing risk.
Turn off the heat pump and drain
the capacitor. Freezing risk.
Solution