Tekno Point ATHENA R32 A-0732 Installationsanleitungen Seite 103

Economizer inlet temp
EA
sensor failure
Indoor environment temp
EB
sensor failure
Economizer outlet temp
EC
sensor failure
ED
Buffer tank sensor failure
DHW water tank sensor
EH
failure
EE
Main board EE failure
EF
Driver board EE failure
High pressure switch
P7
protection
Low pressure switch
P8
protection
Water flow switch off
PC
protection
Temp difference between
H1
water inlet and water outlet
is too large
Overheat protection of
F5
compressor
See above.
See above.
See above.
See above.
See above.
1. The software of the PCB isn't matched.
2. The PCB is damaged. Replace it.
1. The software of the drive board isn't matched.
2. The drive board is damaged. Replace it.
1. Insufficient water flow:
a. The water piping is blocked. Check the water piping and clean the
Y-type filter.
b. There is air in the water piping. Vacuumize it.
c. The power of circulation pump is insufficient. Change to a larger one.
d. Scaling of heat exchanger. Use a special cleaning agent to clean it.
2. The high pressure switch is damaged. Replace it.
3. The fluorine system is blocked. Fix it.
4. The PCB is damaged. Replace it.
1. Refrigerant leakage. Check the leakage and repair it, vacuumize it
and charge refrigerant as parameter table.
2. The refrigerant is insufficient. Charge refrigerant as parameter table.
3. The low pressure switch is damaged. Replace it.
4. The electronic expansion valve is damaged. Replace the electronic
expansion valve.
5. The surface of the evaporator is dirty. Clean the evaporator.
6. The fan is damaged. Replace the fan.
7. The PCB is damaged. Replace it.
1. Check if the water flow switch is reliably connected.
2. There's air in the circulating water inlet pipe. Open the exhaust port
of the circulating pump for vacuum.
3. The water flow switch is damaged. Replace it.
4. The water flow is insufficient. Clean the Y-type filter and ensure that
the circulation pipeline is smooth.
5. If the circulating pump does not work, check if the power output of
the circulating pump on PCB is normal.
6. The circulating pump is damaged. Repair or replace it.
7. The PCB is damaged. Replace it.
1. Insufficient water flow:
a. The water piping is blocked. Check the water piping and clean the
Y-type filter.
b. There is air in the water piping. Vacuumize it.
c. The power of circulation pump is insufficient. Change to a larger one.
d. The circulating pump is damaged. Repair or replace it.
2. The temperature sensor falls off or is damaged. Re-fix or replace the
temperature sensor.
1. Check if the refrigerant is sufficient. Check for leakage, and replenish
refrigerant.
2. The protection switch is damaged. Replace it.
3. The PCB is damaged. Replace it.
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