Astralpool OPTIMA Series - Sensor Fault Protection; Troubleshooting Guide System Faults and List of Error Codes

OPTIMA / MAYA SERIES · HEAT PUMP AIR/WATER
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6.5.11 SENSOR FAULT PROTECTION
Pipe 1、Exhaust 1、Pipe 2、Exhaust 2 Sensors work independently in each circuit and
display different error codes to distinguish between different systems；
Water inlet temperature sensor fault, stops the machine.
If other temperature sensor faults, close the protection.
Auto test: if the sensor failure is corrected, the unit restarts.
Note：If we get a failure when the machine is working, the water pump will continue working
during 5 minites. Then it will be stop.
6.6 TROUBLESHOOTING GUIDE SYSTEM FAULTS AND LIST OF ERROR
CODES
ERROR
LCD
CODE
REASON SOLUTION
Low pressure Malfunction of
system 1
A11
Gas change too low. Possible system
blockage
Check pressure switch and gas circuit;
thermostatic valve closed, evaporator
clogged, fan stopped.
High pressure Malfunction of
system 1
A12
Gas change too high. Possible system
blockage
Check pressure switch and gas circuit,
refrigerant circuit. Insufficient water
flow, stop pump
Low pressure Malfunction of
system 2
A13
Gas change too low. Possible system
blockage
Check pressure switch and gas circuit;
thermostatic valve closed, evaporator
clogged, fan stopped.
High pressure Malfunction of
system 2
A14
Gas change too high. Possible system
blockage
Check pressure switch and gas circuit,
refrigerant circuit. Insufficient water
flow
Flow switch failure
A15
No water/litter water in water system.
Check the water flow volume. Check
water pump
Water inlet temp. sensor
failure
A21 The sensor is open or short circuit Check or change the sensor
Cool1 sensor 1 failure
A22
The sensor is open or short circuit
Check or change the sensor
Cool2 sensor 2 failure
A23
The sensor is open or short circuit
Check or change the sensor
Exhaust sensor 1 failure
A24
The sensor is open or short circuit
Check or change the sensor
Exhaust sensor 2 failure
A25
The sensor is open or short circuit
Check or change the sensor
Fault probe aspiration circuit 1
A26
The sensor is open or short circuit
Check or change the sensor
Fault probe aspiration circuit 2
A27
The sensor is open or short circuit
Check or change the sensor
Outdoor air temperature fault
A28
The sensor is open or short circuit
Check or change the sensor
Water outlet
temp.sensor.failure
A29
The sensor is open or short circuit Check or change the sensor
Low pressure transducer
failure (Optional)
A31 1# The sensor is open or short circuit
Check or change the sensor