■
R
bl 4WIRE COMM PBA
7. Circuits
7. Circuits
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Removable 4WIRE COMM PBA
4WIRE COMM
SUB PBA
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PBA for communication with the wired remote control (4 wire)
: While the previous DVM indoor unit had built-in wired remote control communication circuit on the main PBA,
the new circuit is designed as a sub PBA in the DVM hydro unit extending functionality.
●
Troubleshooting wired remote control communications failure
1. Check if the 4WIRE COMM SUB PBA is properly inserted.
2. Measure the resistance of the pins of the communication IC on the 4WIRE COMM SUB PBA
(in the same way as checking the communication problem of the indoor unit PBA.)
- After the measurement, if the communication IC is defective, replace the SUB PBA.
After the measurement, if the communication IC is defective, replace the SUB PBA.
- After the measurement, if the communication IC is normal, replace the wired remote control.
Summary of Contents for AM160FNBFEB/EU
Page 7: ...1 Product Overview and Features 1 Product Overview and Features Operating Range Hydro unit ...
Page 13: ...2 Product Structure 2 Product Structure ...
Page 14: ...2 Product Structure 2 Product Structure DVM Hydro Unit HT DVM Hydro Unit HT ...
Page 23: ...4 Disassembly and Reassembly 4 Disassembly and Reassembly ...
Page 24: ...4 Disassembly and Reassembly 4 Disassembly and Reassembly ...
Page 25: ...4 Disassembly and Reassembly 4 Disassembly and Reassembly ...
Page 26: ...4 Disassembly and Reassembly 4 Disassembly and Reassembly ...
Page 27: ...4 Disassembly and Reassembly 4 Disassembly and Reassembly ...
Page 28: ...5 Planar Figure and Parts List 5 Planar Figure and Parts List Parts List ...
Page 29: ...5 Planar Figure and Parts List 5 Planar Figure and Parts List Parts List ...
Page 30: ...5 Planar Figure and Parts List 5 Planar Figure and Parts List Parts List ...
Page 33: ......
Page 34: ...6 Installation and Service Precautions 6 Installation and Service Precautions ...
Page 35: ...6 Installation and Service Precautions 6 Installation and Service Precautions ...
Page 36: ......
Page 37: ...6 Installation and Service Precautions 6 Installation and Service Precautions ...
Page 38: ...6 Installation and Service Precautions 6 Installation and Service Precautions ...
Page 39: ...6 Installation and Service Precautions 6 Installation and Service Precautions ...
Page 46: ...7 Circuits 7 Circuits Control Box Parts Layout Drawing of C BOX Picture of C BOX ...
Page 50: ...7 Circuits 7 Circuits Connecting External Contacts Hydro Unit Hydro Unit HT ...
Page 51: ...7 Circuits 7 Circuits Connecting External Contacts ...
Page 52: ...7 Circuits 7 Circuits Connecting External Contacts ...
Page 56: ... Switch and Error Codes 7 Circuits 7 Circuits Switch and Error Codes ...
Page 57: ... Switch and Error Codes 7 Circuits 7 Circuits Switch and Error Codes ...
Page 60: ...d 9 Troubleshooting 9 Troubleshooting Error Codes ...
Page 61: ...9 Troubleshooting 9 Troubleshooting d Error Codes ...
Page 62: ...9 Troubleshooting 9 Troubleshooting d Error Codes ...
Page 73: ... Wired Remote Control for Installation Service mode ...