Troubleshooting
CS3000 AWP – 6721852570 (2023/04)
62
Fig. 95
9Troubleshooting
Display Status
If the keyboard is remote, it is possible to read the unit statuses also from
the display on the main board.
Fig. 96
Table 57
Alarm reset: turn the unit OFF and ON again.
Before resetting an alarm, identify and remove the cause that it is
generating the error. Repeated resets can cause irreversible damage.
Master unit
If the power supply of the Master unit is disconnected, all the units of the
group stop.
The unit is protected under the following conditions:
• High pressure or protection due to drain temperature;
•Low voltage;
• Compressor current protection;
• Frequency protection of the inverter compressor;
Standby: unit address (88 to the left) + online number (88
to the right) On: frequency defrosting: dFdF
0.xx Unit address
1.xx Capacity
2.xx Number of units
3.xx T4 correction
4.xx Mode (8: Off; 0: Standby; 1: Cooling; 2: Heating, 4: hot water)
5.xx Fan speed 1
6.xx Fan speed 2
7.xx T3: coil temperature
8.xx T4: outside temperature
9.xx T5: DHW temperature
10.xx Taf1: Water side pipeline antifreeze
11.xx Taf2: exchanger outlet temperature, antifreeze protection
12.xx Tw: common outlet water temperature, after the last unit
13.xx Two inlet water
14.xx Two outlet water
15.xx Tz total outlet water
16.xx THeatR recovery
17.xx Discharge temperature 1 (Tp1)
18.xx Discharge temperature 2 (Tp2)
19.xx Compressor 1 driver heat sink temperature
20.xx Compressor 2 driver heat sink temperature
21.xx Saturated discharge temperature
22.xx Compressor current A
DSP1
DSP2
Main board - back side
MENU DOWN UP OK
ON
S5
ON
S12
ENC4
NET_ADDRESS
0010045007-001
23.xx Compressor current B
24.xx ---
25.xx Electronic expansion valve opening A (actual valve/20)
26.xx Electronic expansion valve opening B (actual valve/20)
27.xx Electronic expansion valve opening C (actual valve/4)
28.xx High pressure (heating mode) HP
29.xx Low pressure (cooling mode) LP
30.xx Suction superheat Tssh
31.xx Suction temperature TH
32.xx Silent
33.xx Static pressure
34.xx DC voltage A (reserved)
35.xx DC voltage B (reserved)
36.xx
Frequency limit reason (BIT0: T4 frequency limit;
BIT1: discharge temperature limit frequency;
BIT2: Total cooling output frequency limiter;
BIT3: Module temperature limit frequency;
BIT4: Limit frequency of cooling outlet water temperature;
BIT5: Heating high pressure frequency limiting;
BIT6: Current limiting frequency;
BIT7: Voltage limit frequency;
BIT8: DC bus current limit;
BIT9: Refrigeration low pressure frequency limit;
BIT10: Limit frequency of heating water temperature;
BIT11: Reduced frequency of heating exhaust superheat;
BIT12: Power curtailment, not mode 1)
37.xx
Defrosting process status (the first digit: T4 selection plan;
the second digit: the interval in the plan;
the third and fourth digits together represent the defrosting
timing)
38.xx EPROM error: 1: Error; 0: No error
39.xx Defrosting
40.xx Initial frequency
41.xx
Tc: Saturation temperature corresponding to high pressure in
heating mode
42.xx
Te: Saturation temperature corresponding to low pressure in
cooling mode
43.xx T6a: eco exchanger inlet temperature
44.xx T6b: eco exchanger outlet temperature
45.xx Software version
46.xx Last error
47.xx ---
Standby: unit address (88 to the left) + online number (88
to the right) On: frequency defrosting: dFdF
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