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Model
CS-Z20TKEW CS-Z25TKEW CS-Z35TKEW CS-Z42TKEW CS-Z50TKEW CS-Z71TKEW CS-XZ20TKEW CS-XZ25TKEW CS-XZ35TKEW CS-XZ50TKEW CU-Z20TKE CU-Z25TKE CU- 35TKE CU-Z42TKE CU-Z50TKE CU-Z71TKE CU-Z20TKE CU-Z25TKE CU-Z35TKE CU-Z50TKE
Pages
127
Size
33.93 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner / AIR CONDITIONER
File
cs-z20tkew-cs-z25tkew-cs-z35tkew-cs-z42tkew-cs-z50.pdf
Date
PREV: Panasonic CS-TZ20TKEW-1 / CS-TZ25TKEW-1 / CS-TZ35TKEW-1 / CU-TZ20TKE-1 / CU-TZ25TKE-1 / CU-TZ35TKE-1 Service Manual

Panasonic CS-Z20TKEW / CS-Z25TKEW / CS-Z35TKEW / CS-Z42TKEW / CS-Z50TKEW / CS-Z71TKEW / CS-XZ20TKEW / CS-XZ25TKEW / CS-XZ35TKEW / CS-XZ50TKEW / CU-Z20TKE / CU-Z25TKE / CU- / 35TKE / CU-Z42TKE / CU-Z50TKE / CU-Z71TKE / CU-Z20TKE / CU-Z25TKE / CU-Z35TKE / CU-Z50TKE Service Manual ▷ View online

117 
18.4.2  H12 (Indoor/Outdoor Capacity Rank Mismatched) 
Malfunction Decision Conditions 
  During startup, error code appears when different types of indoor and outdoor units are interconnected. 
 
Malfunction Caused 
  Wrong models interconnected. 
  Wrong indoor unit or outdoor unit PCBs mounted. 
  Indoor unit or outdoor unit PCBs defective. 
  Indoor-outdoor unit signal transmission error due to wrong wiring. 
  Indoor-outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor 
and outdoor units. 
 
Troubleshooting 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
118 
18.4.3  H14 (Indoor Intake Air Temperature Sensor Abnormality) 
Malfunction Decision Conditions 
  During startup and operation of cooling and heating, the temperatures detected by the indoor intake air 
temperature sensor are used to determine sensor errors. 
 
Malfunction Caused 
 Faulty 
connector 
connection. 
 Faulty 
sensor. 
 Faulty 
PCB. 
 
Troubleshooting 
 
 
 
 
 
 
 
 
 
 
 
119 
18.4.4  H15 (Compressor Temperature Sensor Abnormality) 
Malfunction Decision Conditions 
  During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor 
temperature sensor are used to determine sensor errors. 
 
Malfunction Caused 
 Faulty 
connector 
connection. 
 Faulty 
sensor. 
 Faulty 
PCB. 
 
Troubleshooting 
 
 
 
 
 
 
 
 
 
 
120 
18.4.5  H16 (Outdoor Current Transformer) 
Malfunction Decision Conditions 
  An input current, detected by Current Transformer CT, is below threshold value when the compressor is 
operating at certain frequency value for 3 minutes. 
 
Malfunction Caused 
  Lack of gas 
  Broken CT (current transformer) 
  Broken Outdoor PCB 
 
Troubleshooting 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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