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Panasonic U-16MF2E8 - Service Manual

Panasonic U-16MF2E8
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85464849326000
REFERENCE NO. SM830226-00
Outdoor Unit
Model No.
Class 73 106 140 224 280
E1
High Static Pressure
Ducted
Indoor Unit
Class 22 28 36 45 56 60 73 90 106 140 160
U1
4-Way Cassette
S-160MU1E51S-140MU1E51S-106MU1E51S-73MU1E51
S-160MU1E5S-140MU1E5S-106MU1E5S-73MU1E5
S-140MT1E5S-106MT1E5S-73MT1E5
S-106MK1E5S-73MK1E5
S-56MU1E51
S-60MU1E51
S-60MF2E5
S-90MU1E51
S-160MF1E5S-140MF1E5S-106MF1E5S-73MF1E5 S-90MF1E5
S-45MU1E51S-36MU1E51
S-56MU1E5S-45MU1E5S-36MU1E5
S-28MU1E51
S-28MU1E5
S-22MU1E51
S-22MU1E5
S-56MF1E5
S-45MF1E5S-36MF1E5S-28MF1E5S-22MF1E5
S-160MF2E5S-140MF2E5S-106MF2E5S-73MF2E5
S-71MP1E5
S-90MF2E5S-56MF2E5
S-45MF2E5S-36MF2E5S-28MF2E5S-22MF2E5
S-56MM1E5S-45MM1E5S-36MM1E5S-28MM1E5S-22MM1E5
S-56MP1E5S-45MP1E5S-36MP1E5S-28MP1E5S-22MP1E5
S-71MR1E5S-56MR1E5S-45MR1E5S-36MR1E5S-28MR1E5S-22MR1E5
S-280ME1E5S-224ME1E5S-140ME1E5S-106ME1E5S-73ME1E5
S-56ML1E5S-45ML1E5S-36ML1E5S-28ML1E5
S-56MD1E5S-45MD1E5S-36MD1E5S-28MD1E5
S-22ML1E5
S-56MK1E5S-45MK1E5S-36MK1E5
S-56MT1E5S-45MT1E5S-36MT1E5
S-28MK1E5S-22MK1E5
S-56MY1E5S-45MY1E5S-36MY1E5S-28MY1E5S-22MY1E5
L1
2-Way Cassette
S-73ML1E5
S-73MD1E5
D1
1-Way Cassette
F1
Low Silhouette Ducted
F2
Low Silhouette Ducted
T1
Ceiling
K1
Wall Mounted
R1
Concealed Floor
Standing
P1
Floor Standing
Y1
4-Way Cassette 60×60
M1
Slim Low Static Ducted
Model Name
Class 8HP 10HP 12HP 14HP 16HP
MF2
U-16MF2E8U-14MF2E8U-12MF2E8U-10MF2E8U-8MF2E8
Order No.SM830226-11CE
SM830226-003WAYECO-iSYSTEM.inaaSM830226-003WAYECO-iSYSTEM.inaa 2013/02/071:23:242013/02/071:23:24

Table of Contents

Other manuals for Panasonic U-16MF2E8

Questions and Answers

  • T
    Thomas ColemanSep 12, 2025
    Why does my Panasonic U-16MF2E8 fan keep running after I turn it off?
    • N
      nrogersSep 12, 2025
      The fan may continue to rotate after operation stops to ensure smooth operation and to dry the heat exchanger, depending on the settings.
  • J
    James HernandezSep 12, 2025
    Why is the fan still rotating on my Panasonic U-16MF2E8 Air Conditioner after I turn it off?
    • K
      Kristina BrownSep 12, 2025
      The fan in your Panasonic Air Conditioner may continue to run even after the unit is stopped by the remote controller because it helps to ensure smooth operation.
  • M
    mooneywilliamSep 9, 2025
    Why is my Panasonic U-16MF2E8 Air Conditioner making noise in heating mode?
    • K
      kemppeterSep 9, 2025
      The noise you hear in heating mode from your Panasonic Air Conditioner is likely due to the defrost operation.
  • G
    Glenda ReyesSep 8, 2025
    Why is my Panasonic Air Conditioner making noise when heating?
    • N
      Nicholas KingSep 8, 2025
      The noise you hear during heating operation of your Panasonic Air Conditioner may be due to the defrost operation being in process.
  • D
    Denise GarrettSep 7, 2025
    Why are there dewdrops near the air outlet of my Panasonic U-16MF2E8?
    • M
      Megan HuffmanSep 7, 2025
      Dewdrops may accumulate near the air outlet of your Panasonic Air Conditioner during cooling operation because internal moisture is cooled by the cool wind, causing it to condense into dewdrops.
  • A
    anntranAug 23, 2025
    Why is my Panasonic U-16MF2E8 Air Conditioner cooling or heating poorly?
    • H
      hopkinskentAug 23, 2025
      If your Panasonic Air Conditioner's cooling or heating performance is poor, check if the air inlet or outlet of the indoor and outdoor units are blocked by dust and remove any dust. Also, ensure the air speed control is set to 'High' or 'Strong'. Verify that the temperature settings are correct by lowering the temperature setting or setting it to 'High' or 'Strong'. Finally, consider that direct sunlight exposure in cooling mode can affect performance.
  • M
    Mary BakerSep 5, 2025
    Why does the fan keep running on my Panasonic Air Conditioner after I turn it off?
    • G
      gfordSep 5, 2025
      The fan in your Panasonic Air Conditioner may continue to run even after you turn it off to ensure smooth operation. Also, depending on the settings, the fan may rotate to dry the heat exchanger.
  • C
    Christian HamiltonSep 4, 2025
    How to fix a noisy Panasonic Air Conditioner?
    • B
      baileyemilySep 4, 2025
      The noise you hear from your Panasonic Air Conditioner could be due to a few reasons: it could be the sound of refrigerant liquid flowing inside the unit, the sound of drainage water through the drain pipe, or sound due to temperature changes of parts. These are normal and do not indicate a problem.
  • D
    dwelchSep 3, 2025
    Why is the outdoor unit fan on my Panasonic U-16MF2E8 Air Conditioner still running after I turn it off with the remote?
    • J
      joshuaruizSep 3, 2025
      Fan rotating makes operation smoothly.
  • J
    james00Sep 2, 2025
    Why does the fan on my Panasonic Air Conditioner rotate faster than the setting speed at the initial high-speed operation?
    • K
      Katie HernandezSep 2, 2025
      This happens for operation check in order to confirm whether the fan motor rotation is within use range.

Summary

SERVICE MANUAL

IMPORTANT! Please Read Before Starting

SPECIAL PRECAUTIONS

Critical warnings and precautions for installation, wiring, and handling.

Precautions for Installation Using New Refrigerant

Section 1: CONTROL FUNCTIONS

Section 5. TROUBLE DIAGNOSIS

1. CONTROL FUNCTIONS

3. Compressor Control

Detailed explanation of compressor control methods and operations.

11. Alarm Information

Information regarding system alarms and error codes.

12. Backup Operation

Functions for automatic and manual backup operation during failures.

3. Compressor Control

3-7. Protection Control

Protective control mechanisms for compressors.

10. Upper Current Limitation Mode (Demand control)

11. Alarm Information

11-1. Discharge Temperature

Information on discharge temperature protection and related alarms.

11-2. Current Protection

Information on alarms related to current protection.

11-3. Pressure Sensor Failure

Information on high and low-pressure sensor failures.

11-4. High Pressure Protection and Low Pressure Protection

Protection mechanisms and alarms for abnormal high and low pressures.

11-5. Temperature Sensor Failure

Alarms and troubleshooting for temperature sensor failures.

11-6 Magnet Switch Failure

Troubleshooting magnet switch failures and their operational impact.

12. Backup Operation

12-1. Automatic Backup Operation

Function and engagement of automatic backup operation.

12-2. Manual Backup Operation

Procedures for performing manual backup operation.

2. OUTDOOR UNIT REPAIR PROCEDURES

2. Discharging Compressor Oil

Steps for safely discharging compressor oil.

3. Backup Operation

Procedures for operating the system in backup mode.

4. Recovering Refrigerant

Steps for recovering refrigerant from the system.

5. Checking for Leakage After Repair

Methods for checking for refrigerant leaks after repair work.

6. Evacuating System

Procedure for evacuating the refrigerant system.

7. Charging Compressor Oil

Steps for charging compressor oil into the system.

8. Pumping Out Refrigerant from Outdoor Unit

Procedure for pumping out refrigerant from an outdoor unit.

9. Compressor

Information and procedures related to compressor maintenance and replacement.

2. Discharging Compressor Oil

2-1. Discharging Oil from Oil Separator

Procedure for discharging oil from the oil separator.

2-2. Discharging Oil in Compressor

Procedure for discharging oil directly from the compressor.

2-3. Checking the Oil

Criteria for accepting or rejecting discharged compressor oil.

3. Backup Operation

3-1. Automatic Backup Operation for Compressor

Details on automatic backup operation for compressors.

(2) Adjusting the refrigerant for backup operation

Procedure for adjusting refrigerant levels during backup operation.

3-2. Manual Backup

Procedures for manual backup operation.

4. Recovering Refrigerant

4-1. Refrigerant Recovery Procedures (from outdoor unit)

Step-by-step guide for recovering refrigerant from an outdoor unit.

4-2. Refrigerant Recovery Procedures (Indoor Unit)

Procedures for recovering refrigerant from indoor units.

4-2-2. Refrigerant recovery procedures (1) (using indoor unit ball valve)

Refrigerant recovery process using an indoor unit ball valve.

4-2-3. Refrigerant recovery procedures (2): Indoor unit with no ball valve equipped

Refrigerant recovery steps for indoor units without ball valves.

4-3. Recovery of Refrigerant from Entire System

Procedure for recovering refrigerant from the entire system.

5. Checking for Leakage After Repair

5-1. Pressure Check for Leakage of Outdoor Unit

Performing a pressure check to detect leaks in the outdoor unit.

6. Evacuating System

6-1. Evacuating Repaired Outdoor Unit

Procedure for evacuating gases from a repaired outdoor unit.

7. Charging Compressor Oil

7-1. If Refrigerant Has Already Been Charged to Outdoor Unit

Procedure for charging compressor oil when refrigerant is already present.

(3) Charging compressor oil into outdoor unit

Steps for charging compressor oil into the outdoor unit.

7-2. If Outdoor Unit Has Not Been Charged with Refrigerant

Procedure when outdoor unit has not been charged with refrigerant or compressor.

7-3. Charging Additional Compressor Oil (after replacing compressor)

Procedure for charging additional compressor oil after replacement.

8. Pumping Out Refrigerant from Outdoor Unit

8-1. If Remote Controller (CZ-RTC2) is Used for Maintenance of Outdoor Unit

Procedure for pumping out refrigerant using the CZ-RTC2 remote controller.

8-2. If Remote Controller is Not Available for maintenance of Outdoor Unit

Procedure for pumping out refrigerant without the remote controller.

(9) Close the gas tube and balance tube...

Final steps for pumping out refrigerant from an outdoor unit.

9. Compressor

9-1. Compressor Trouble Diagnosis and Check Methods

Methods for diagnosing compressor troubles and checking components.

9-2. Replacing the Compressor(s)

Procedures for replacing compressors.

9-2-2. Replacing all compressors in a failed unit

Procedure to replace all compressors in a failed unit.

9-2-3. Replacing all compressors in a system

Procedure to replace all compressors across the entire system.

9-2-4. Dry core cleaning

Procedure for dry core cleaning to remove contaminants.

(B) If a ball valve is not installed on the outdoor unit

Dry core cleaning steps when no ball valve is installed on the outdoor unit.

9-3. Removing Compressors

Procedure for removing compressors from the unit.

9-3-2. Removing Constant-Speed Compressors (for 12, 14 and 16 horse power models)

Specific steps for removing constant-speed compressors.

9-2-1. Replacing only the failed compressor

Steps to replace a single failed compressor.

4. REMOTE CONTROLLER FUNCTIONS

5. TROUBLE DIAGNOSIS

1. Contents of Remote Controller Switch Alarm Display

Overview of alarm codes displayed on the remote controller.

2. Outdoor Unit Control Panel LED Display

Understanding the LED indicators on the outdoor unit control panel.

4. 3 WAY Alarm Codes

List and explanation of specific 3WAY system alarm codes.

8. Symptom: Thermostat in OFF continues or cycles OFF & ON too frequently

Diagnosing and resolving symptoms related to thermostat cycling.

1. Contents of Remote Controller Switch Alarm Display

4. 3 WAY Alarm Codes

E06 Alarm

Details and troubleshooting for E06 alarm.

E16 Alarm

Details and troubleshooting for E16 alarm.

E25 Alarm

Details and troubleshooting for E25 alarm.

F04, F05 Alarm

Troubleshooting for F04 and F05 discharge temperature sensor alarms.

F06, F23 Alarm

Troubleshooting for F06 and F23 gas temperature sensor alarms.

F08 Alarm

Troubleshooting for F08 outdoor air temperature sensor alarm.

F16 Alarm

Troubleshooting for F16 high-pressure sensor malfunction alarm.

F17 Alarm

Troubleshooting for F17 low-pressure sensor trouble alarm.

H11, H12 Alarm

Troubleshooting for H11/H12 constant speed compressor overcurrent/lock alarms.

H03, H13 Alarm

Troubleshooting for H03/H13 compressor CT sensor alarms.

H06 Alarm

Troubleshooting for H06 abnormal low-pressure alarm.

H08, H27 Alarm

Troubleshooting for H08/H27 oil sensor connection alarms.

L10 Alarm

Troubleshooting for L10 outdoor unit capacity not set alarm.

L17 Alarm

Troubleshooting for L17 outdoor unit model mismatch alarm.

E12 Alarm

Details and troubleshooting for E12 alarm.

E20 Alarm

Details and troubleshooting for E20 alarm.

E26 Alarm

Details and troubleshooting for E26 alarm.

F07, F24 Alarm

Troubleshooting for F07 and F24 liquid temperature sensor alarms.

F12 Alarm

Troubleshooting for F12 compressor intake temperature sensor alarm.

H05, H15 Alarm

Troubleshooting for H05/H15 discharge temperature sensor alarms.

H31 Alarm

Troubleshooting for H31 HIC trouble alarm.

L11 Alarm

Troubleshooting for L11 solenoid valve kit installation failure alarm.

E15 Alarm

Details and troubleshooting for E15 alarm.

E24 Alarm

Details and troubleshooting for E24 alarm.

E29 Alarm

Details and troubleshooting for E29 alarm.

F14 Alarm

Troubleshooting for F14 SCG temperature sensor alarm.

H01 Alarm

Troubleshooting for H01 compressor 1 current trouble alarm.

L04 Alarm

Troubleshooting for L04 outdoor system address duplication alarm.

E31 Alarm

Details and troubleshooting for E31 alarm.

5. Blinking Inspection Display

8. Symptom: Thermostat in OFF continues or cycles OFF & ON too frequently

Panasonic U-16MF2E8 Specifications

General IconGeneral
BrandPanasonic
ModelU-16MF2E8
CategoryAir Conditioner
LanguageEnglish

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