BSVILLAGE Hayward Micro, Installation Instructions Manual, Page: 52 / 237

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8. APPENDICES (continued)
8.3 Troubleshooting guide
Repairs and maintenance must be carried out by a qualified technician.
For more information, contact customer service.
Problem
Error
codes
Description Solution
High pressure fault E01
Pressure in the refrigerant circuit is
too high,
or water flow is too low,
or evaporator is blocked,
or air flow is too low.
Verify the high pressure switch and
the refrigerant circuit pressure.
Verify the water or air flow.
Verify that the flow switch is working
correctly.
Verify the water inlet/outlet valve
openings.
Check the bypass valve setting.
Low pressure fault E02 Bypass open Verify inlet T2 on the diagram.
Flow detector fault E03
Water flow is insufficient or the
detector is in short-circuit or defective.
Check the water flow.
Verify the filtration pump and the
flow detector to see if they have any
possible problems.
Inflow/outflow temperature
difference > 13°C
E06 Insufficient volume of water flow
Verify the water flow or check if there
is a system obstruction.
Communication problem E08
Problem with the LED controller or the
PCB connection.
Verify the connection of cables.
Water inlet sensor fault (IT) P01
The sensor is open or short-circuiting Verify or replace the sensor.
Water outlet sensor fault (AT) P02
Outside temperature sensor
fault (OT)
P04
De-icing sensor fault (CT) P05
Compressor backflow sensor
fault
P081
The sensor is open or presents a
short-circuit.
Verify or replace the sensor.
Operating limit reached
TP
Ambient temperature < 10°C Shut off the heat pump.