20 | 20 | master unit defrosting temp, sensor Te failure | the sensor voltage is below 0.1V (open circuit) or over 4.8V (short circuit) for 1 minute, not alarm in defrosting and within 3 minutes after defrosting. |
21 | 20 | master unit ambient temp, sensor Ta failure | the sensor voltage is below 0.1V (open circuit) or over 4.8V (short circuit) for 1 minute, not alarm in defrosting and within 3 minutes after defrosting. |
22 | 20 | master unit suction temp, sensor Ts failure | the sensor voltage is below 0.1V (open circuit) or over 4.8V (short circuit) for 1 minute, not alarm in defrosting and within 3 minutes after defrosting. |
23 | 20 | master unit discharging temp, sensor Td failure | after compressor runs for 5 minutes, sensor voltage is below 0.1V(open circuit) or over 4.8V (short circuit) for 1 minute, not alarm in defrosting or within 3 minutes after defrostinq |
24 | 20 | master unit oil temp, sensor Toil failure | the sensor voltage is below 0.1V (open circuit) or over 4.8V (short circuit) for 1 minute, not alarm in defrosting and within 3 minutes after defrosting. |
25 | 20 | heat exchanger inlet temp. Toci failure | the sensor voltage is below 0.1V (open circuit) or over 4.8V (short circuit) for 1 minute, not alarm in defrosting and within 3 minutes after defrosting. |
27 | 20 | master unit oil temp, too high | when compressor is running, oil temp, is no less than SO’C, unit stops and alarms for 4 minutes; after compressor stops, when oil temp, is no more than 70'C for 1 minute, resumable. If the failure occurs 3 times in an hour, confirm the alarm. |
28 | 20 | master unit high pressure sensor Pd failure | the sensor voltage is below 0.1V (open circuit) or over 4.8V (short circuit) for 30 seconds, not alarm in defrosting and within 3 minutes after defrosting. |
29 | 20 | master unit low pressure sensor Ps failure | the sensor voltage is below 0.1V (open circuit) or over 4.8V (short circuit) for 30 seconds, not alarm in defrosting and within 3 minutes after defrosting. |
30 | 20 | master unit high pressure switch failure | when compressor is running, if switch opens for 1 minute, alarm; after the unit stops for 2 minutes and 50 seconds, resumable. If the failure occurs 3 times in an hour, confirm the alarm. |
31 | 20 | master unit low pressure switch failure | compressor stops, if detecting pressure switch for 30 seconds, alarm; after compressor is running for 10 minutes, switch opens for 1 minute, alarm; if the failure occurs 3 times in an hour, confirm the alarm. Not detect in the course of soft start, defrosting and within 3 minutes after defrosting, oil return and within 5 minutes after oil return. |
32 | 20 | overcooling heat exchanger outlet temp. Tsco failure | the sensor voltage is below 0.1V (open circuit) or over 4.8V (short circuit) for 1 minute, not alarm in defrosting and within 3 minutes after defrosting. |
33 | 20 | EEPROM failure of master unit main chip 849 | EEPROM faulty, or being inserted conversely, with incorrect part |
34 | 20 | master unit discharging temp. Td protection | Td sensor is over 120*C for 10 seconds, unit stops and alarms; 2 minutes and 50 seconds later, resumable. If it occurs 3 times in an hour, confirm the alarm. |
36 | 20 | master unit oil temp, too low | compressor is running. Toil < PS+10 for 4 minutes or Toil
1. When Ta<=0X:, Toil>=Ps+10 and Toil >=6;
2.When Ta>0‘C, Toil>=Ps+10 or Toil >=36
|
38 | 20 | master unit high pressure sensor Pd too low protection | compressor is running, detecting Pd sensor is below 17. 8kg/cm2. and compression ratio is below 2 for 5 minutes, the unit stops and alarms. Not detect in the course of defrosting, within 3 minutes after defrosting, oil return, within 5 minutes after oil return. |
39 | 20 | master unit low pressure sensor Ps too low protection | compressor is running, detecting Ps sensor is below 0. Skg/cm^or 10 seconds; in oil return, detecting Ps sensor is below 0.3kg/cm*for 10 seconds, the unit stops and alarms. 2 minutes and 50 seconds later after unit stops, resume. |
40 | 20 | master unit high pressure sensor Pd too high protection | compressor is running, detecting Pd sensor is over 40kg/cmifor 10 seconds: the unit stops and alarms. 2 minutes and 50 seconds later after unit stops, resume. If it occurs 3 times in an hour, confirm the alarm |
43 | 20 | discharging temp, sensor Td protection | compressor is running. Td |
44 | 20 | communication between master unit main chip 849 and communication chip 849 failure | no communication for 4 minutes |
46 | 20 | communication between connecting board and module board failure | no communication for 4 minutes |
47 | 20 | radiator failure | radiator temp, is over 95degree. the unit alarms. 2 minutes and 50 seconds later after unit stops, resume. |
48 | 20 | ACCT over current protection (instant value) | ACCT sensor detects that he instant current peak value between U and V is over 94A. 2 minutes and 50 seconds later after the unit stops, resume. |
49 | 20 | ACCT over current protection (virtual value) | ACCT sensor detects that he instant current peak value between U and V is over 34Arms. 2 minutes and 50 seconds later after the unit stops, resume. |
50 | 20 | over voltage | VDC is over 817V. 2 minutes and 50 seconds later after the unit stops, resume. |
51 | 20 | current detecting failure | after compressor has run for 10 seconds, current among U. V. W is below 1.5Arms. 2 minutes and 50 seconds later after the unit stops, resume. |
52 | 20 | radiator sensor failure | before startup, detect if the sensor is in short circuit or in open circuit. 2 minutes and 50 seconds later after unit stops, resume. |
53 | 20 | current sensor broken down | before startup, the sensor is in short circuit or in open circuit. 2 minutes and 50 seconds later after unit stops, resume. |
54 | 20 | voltage is too low | detecting VDC is less than 289V. 2 minutes and 50 seconds later after unit stops, resume. |
55 | 20 | radiator fan broken down | STANDBY state keeps for 10 minutes. 2 minutes and 50 seconds later after unit stops, resume. |
56 | 20 | ACCT faulty | in running. H/W of ACCT is faulty. 2 minutes and 50 seconds later after unit stops, resume. |
57 | 20 | DCCT faulty | in running. H/W of ACCT is faulty. 2 minutes and 50 seconds later after unit stops, resume. |
58 | 20 | IPM faulty | in running. IPM output is faulty. 2 minutes and 50 seconds later after unit stops, resume. |
59 | 20 | VDC faulty | in running. H/W of VDC is faulty. 2 minutes and 50 seconds later after unit stops, resume. |
60 | 20 | logic problem | when startup or running. PWM output is abnormal. 2 minutes and 50 seconds later after unit stops, resume. |
61 | 20 | IPM in short circuit or the earthing is short circuit | IPM in short circuit or earthing in short circuitl. 2 minutes and 50 seconds later after unit stops, resume. |
62 | 20 | load is short circuit | load in short circuit. 2 minutes and 50 seconds later after unit stops, resume. |
63 | 20 | incorrect wiring | ACCT wiring is faulty. 2 minutes and 50 seconds later after unit stops, resume. |
64 | 20 | overload | current exceeds the limitation for 10 minutes. 2 minutes and 50 seconds later after unit stops, resume. |
65 | 20 | DCCT sensor detecting abnormal | in startup. DCCT current is less than 6.5A 2 minutes and 50 seconds later after unit stops, resume. |
66 | 20 | DCCT sensor broken down | before startup. DCCT voltage is out of control. 2 minutes and 50 seconds later after unit stops, resume. |
67 | 20 | communication abnormal with fan motor driving board | no communication for 4 minutes |
68 | 20 | DC fan motor driving board IPM alarms | in communication the code byte is 0*20. 2 minutes and 50 seconds later after unit stops, resume. If it occurs 3 times in an hour, confirm the alarm. |
69 | 20 | DC fan motor driving board pressure too high protection | in communication the code byte is 0*04. 2 minutes and 50 seconds later after unit stops, resume. If it occurs 3 times in an hour, confirm the alarm. |
70 | 20 | DC fan motor driving board pressure too low protection | in communication the code byte is 0*08. 2 minutes and 50 seconds later after unit stops, resume. If it occurs 3 times in an hour, confirm the alarm. |
71 | 20 | DC fan motor driving board blocked | in communication the code byte is 0*01. 2 minutes and 50 seconds later after unit stops, resume. If it occurs 3 times in an hour, confirm the alarm. |
72 | 20 | DC fan motor driving board EEPROM faulty | in communication the code byte is 0*02. 2 minutes and 50 seconds later after unit stops, resume. If it occurs 3 times in an hour, confirm the alarm. |
73 | 20 | DC fan motor driving board detecting out of control | in communication the code byte is 0*10. 2 minutes and 50 seconds later after unit stops, resume. If it occurs 3 times in an hour, confirm the alarm. |
74 | 20 | DC fan motor driving board over current or curent transducer broken down | in communication the code byte is 0*40. 2 minutes and 50 seconds later after unit stops, resume. If it occurs 3 times in an hour, confirm the alarm. |
75 | 20 | compressor power cable of inverter board phase sequence is incorrect | after compressor starts up. the high pressure is lower than the low pressure for 1 minute continuously. |