HTW NEO -BP21MDA Manual De Usuario E Instalacion página 41

SWIMMING POOL HEAT PUMP/ SPA NEO
Error Meaning
High pressure
P02
protection
Low pressure
P03
protection
T3 Coil
P04 overheat
protection
Exhausting gas
P05 temperature
protection
Outlet water
temperature
P06
anti-freezing
protection
Pipe
temperature
P07
anti-freezing
protection
Analysis
1. Water flow is too
small;
2. High-pressure
switch is damaged;
3. Refrigerant system
block;
4. EEV deadlock.
1. Lack of gas ;
2. Refrigerant system
block;
3. Exceed heat pump
operation range.
1. Heat Pump fan
blowing area is
blocked;
2. Evaporator is
blocked;
3. T3 coil sensor
position was
changed.
1. Lack of gas;
2. Sensor position was
changed.
1. Lower water flow;
2. Heat exchanger
blocked;
3. Y-shaped filter
blocked;
4. Over low load.
1. System lack of gas;
2. Water system has
block;
3. Cooling system has
block.
Diagnosis
1. Check if water flow is
not enough or water
pump flow is not
enough;
2. Check if high-pressure
switch is off;
3. Check if refrigerant
system is blocked;
4. When heat pump is off
and turn the heat pump
on and off to check if
EEV can be listened by
sound of reset.
1. Check if gas system is
leaking;
2. Check if filter is
blocked;
3. Check ambient Temp.
And water temp.is over
limitation.
1. Check if the blowing
area is open;
2. Check if the evaporator
is blocked;
3. Check if the coil sensor
resistance value is
correct.
1. Check if refrigerant
system is leaking;
2. Check if the sensor
resistance value is
correct.
1. Check if air exists in
water system;
2. Plate heat exchanger if
blocked;
3. Check if Y-shaped filter
has block;
4. Check design of
indoor water system
if reasonable, if have
water bypass.
1. Check system if any
leakage;
2. Check Y-shaped filter
has block;
3. Check if cooling system
filter has block.
USER AND INSTALLATION MANUAL
6. OPERATING THE UNIT
Solution
1. Reinject water or change to
a new pump of larger water
flow;
2. Change a new high-
pressure switch;
3. Change a new filterChange
a new EEV.
1. Amend the leakage and
reinject the gas;
2. Change a new filter.
1. Put away the blow area;
2. Clean the evaporator;
3. Change a new sensor.
1. Amend the leakage and
reinject the gas;
2. Change a new sensor.
1. If drain valve has problem,
change a new one;
2. Blow plate heat exchanger
with water or high-
pressure gas through
reverse direction;
3. Clean Y-shaped filter;
4. Water system must have
bypass.
1. Fix leakage and re-charge
gas;
2. Clean Y-shaped filter;
3. Change filter.
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