Trianco Activair - ERROR CODES; Error Codes E01-E29

28
Error Codes
Error
code
Error name Relevant parts information Review and resolve
E01 High Pressure
Protection
High Pressure switch
Heat Exchanger
Refrigerant System
1. High pressure switch is damaged or false connected.
2. Scaling of casing or plate heat exchanger; (Heating)
3. The fins are dirty and blocked, and the ventilation is poor;
(Cooling)
4. Abnormal throttling.
5. System blocking.
5. The outlet water temperature is on the high side.
6. Excessive refrigerant charge.
E02 Low Pressure
Protection
Low Pressure Switch
Heat Exchanger Fins
Refrigerant System
1. Fluorine leakage in the system.
2. False connection or damage of low-pressure switch.
3. Poor defrosting.
4. The fins are dirty and blocked, and the ventilation is poor.
5. Abnormal throttling.
6. System blocking;
E03 Water Flow
switch Protection
Flow Switch
Water Pump
1. Water pump failure.
2. The water system is not completely emptied and still
contains gas.
3. The resistance of the water system is too large.
4. The valves of the water system are not fully opened.
5. The water circuit filter is dirty and blocked.
6. The water flow switch is false connected or damaged;
E04 Electric heater
overheat
Protection
1. Check if the Electrical heating Overheat protector is open
or not.
2. Check the Electrical heater.
E05 Water Circuit
Frost Protection
1. Insufficient water flow.
2. The outlet water temperature is too low;
E06 Inlet and outlet
water over
temperature
protection
1. Insufficient water flow.
E08
Communication
failure between
PCB and display
Communication error
between PCB and DISPLAY
1. Check cable connection of PCB and DISPLAY.
2. Check the software version of PCB and DISPLAY.
E11 HP Protection HP switch is open
1. Check whether showing the error after unit shutdown.
2. Measure the discharge pressure when the unit is running.
3. Detect EEV step, suction pressure, inlet/outlet water
discharge and suction temp.
4. Release all the gas of the system and refill refrigerant
according to the nameplate.
E12 LP Protection LP switch is open
1. Check whether showing the error after unit shutdown.
2. Measure the suction pressure when the unit is running.
3. Detect EEV step, discharge pressure, inlet/outlet water
discharge and suction temp.
4. Release all the gas of the system and refill refrigerant
according to the nameplate.
E19 Primary Anti-
freezing
Protection
Ambient temp.≤0
℃
, A04-2
℃
≤ water inlet≤A04
℃
Frost protection in winter. Once the water temperature rises
to A04+4
o
C or the ambient temp is higher than 1, the error
code disappears.
E29 Secondary Anti-
freezing
Protection
Ambient temp.≤0
℃
, water
inlet≤A04-2
℃
Frost protection in winter. Once the water temperature up to
A04+11
o
C or the ambient temp is higher than 1, the error
code disappears.
E19 Primary Anti-
freezing
Protection
Ambient temp.≤0
℃
, 2
℃
≤
water inlet≤4
℃
Frost protection in winter. Once the water temperature rises
to 8
o
C or the ambient temp is higher than 1
o
C, the error
code disappears.
E29 Secondary Anti-
freezing
Protection
Ambient temp.≤0
℃
, water
inlet≤2
℃
Frost protection in winter. Once the water temperature up to
15
o
C or the ambient temp is higher than 1
o
C, the error code disappears.