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Störungscode P29_Mini_ECOi

(ECOi-Geräte)

INV Compressor Start-up Failed (including lock) Due to INV Compressor WiringOpen Phase, Faulty DCCT, etc.

1. Error Detection Method

  • Abnormal current is detected at DCCT before start-up.
  • Start-up failed during overcurrent and/or step-out detected.
  • Open-wire of compressor and/or backspin detected.
  • Secondary current is not detected during INV compressor is running.

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

  • Measure with an analog tester. (Set to the k ohm range)
  • Measure the board by itself. (Remove wires connected from other parts.)
  • Measure using IPM terminals.
✭ Conforming part resistance value (measure with an analog tester)

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.

Abb_mini-ecoi_P29.jpg
 

 

 


 

 

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