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CS-TZ20TKEW CS-TZ25TKEW CS-TZ35TKEW CS-TZ42TKEW CS-MTZ16TKE CU-TZ20TKE CU-TZ25TKE CU-TZ35TKE CU-TZ42TKE
Pages
127
Size
23.23 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner / AIR CONDITIONER
File
cs-tz20tkew-cs-tz25tkew-cs-tz35tkew-cs-tz42tkew-cs.pdf
Date
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Panasonic CS-TZ20TKEW / CS-TZ25TKEW / CS-TZ35TKEW / CS-TZ42TKEW / CS-MTZ16TKE / CU-TZ20TKE / CU-TZ25TKE / CU-TZ35TKE / CU-TZ42TKE Service Manual ▷ View online

101 
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 
 
 
 
 
 
 
 
 
 
 
102 
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 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
103 
18.4.6  H19 (Indoor Fan Motor – DC Motor Mechanism Locked) 
Malfunction Decision Conditions 
  The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor 
(feedback of rotation > 2550 rpm or < 50 rpm) 
 
Malfunction Caused 
  Operation stops due to short circuit inside the fan motor winding. 
  Operation stops due to breaking of wire inside the fan motor. 
  Operation stops due to breaking of fan motor lead wires. 
  Operation stops due to Hall IC malfunction. 
  Operation error due to faulty indoor unit PCB.  
 
Troubleshooting 
 
 
 
 
 
 
 
 
 
 
 
 
104 
18.4.7  H23 (Indoor Pipe Temperature Sensor Abnormality) 
Malfunction Decision Conditions 
  During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger 
temperature sensor are used to determine sensor errors. 
 
Malfunction Caused 
 Faulty 
connector 
connection. 
 Faulty 
sensor. 
 Faulty 
PCB. 
 
Troubleshooting 
 
 
 
 
 
 
 
 
 
 
 
 
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