(ECOi-Geräte)
1. Error Detection Method
2. Error Diagnosis
| 1 Wiring |
1-1 | 1-1 Disconnected parts, miswiring and/or poor connections (loose) are observed in the connections of HIC PC board(s) that are connected by wiring to a compressor. *1 | Yes | Correct wiring connections |
| No | 1-2 | |||
| 1-2 | Disconnected parts, miswiring and/or poor connections (loose) are observed in the connections of outdoor board(s) that are connected by wiring from the HIC PC board. *1 | Yes | Correct wiring connections | |
| No | 2-1 | |||
| 2 Compressor wiring |
2-1 | Disconnections and/or miswiring is observed in the connections of the compressor terminals. *1 | Yes | Correct |
| No | 2-2 | |||
| 2-2 | Conditions such as burned terminal covers and/or discolored terminals are observed at the connectors of the compressor terminals. *1 | Yes | Eliminate looseness by changing the terminals, or crimping the terminals again. | |
| No | 3-1 | |||
| 3 Check the HIC PC boards |
3-1 | The results of the pass/fail tests for the following HIC PC board IPM show it to be outside the range of the resistance of a conforming part. | Yes | Replace the HIC board |
| No | 3-2 | |||
| 3-2 | Replace the HIC PC board and operate the unit. (Apply putty and screws must not be loose) Does it operate normally? | Yes | See what happens. | |
| No | 4-1 | |||
| 4 Check the outdoor control PC board |
4-1 | Replace the control PC board and operate the unit. |
See what happens. |
|
*1 Checking for looseness of compressor terminals by wiggling them has the adverse effect of loosening them, so do not do it. Evaluate them by discoloration of wire insulation near the terminal.
• HIC board IPM Pass/Fail Tests
| Tester terminals | ||||||||
| + | P | NU | ||||||
| - | U | V | W | NU | U | V | W | P |
| Resistance value (ohm) |
1 k to 5 k |
1 k to 5 k |
1 k to 5 k |
5 k to 10 k |
100 k to ∞ |
100 k to ∞ |
100 k to ∞ |
100 k to ∞ |
| Tester terminals | ||||||||
| - | P | NU | ||||||
| + | U | V | W | U | V | W | ||
| Resistance value (ohm) |
100 k to ∞ |
100 k to ∞ |
100 k to ∞ |
1 k to 5 k |
1 k to 5 k |
1 k to 5 k |
||
Excepting the parts of 100 k to ∞, it is acceptable if a small resistance value appears as a reference value unless the value is 0 = short-circuit.