Panasonic S-56MK2E5B - User Manual

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Operating Instructions

Air Conditioner

Panasonic Corporation

1006 Kadoma, Kadoma City, Osaka, Japan

WEB-ACXF55-29100-EN

Wall Mounted

(Type K2)

Model No.

INDOOR UNIT

Wall Mounted

(Type K2)

S-15MK2E5B S-45MK2E5B

S-22MK2E5B S-56MK2E5B

S-28MK2E5B S-73MK2E5B

S-36MK2E5B S-106MK2E5B

● Connectable outdoor unit lineup

OUTDOOR UNIT

Refrigerant type : R410A

mini VRF (Type LE1, LE2)

2WAY VRF (Type ME2)

3WAY VRF (Type MF3)

Refrigerant type : R32

mini VRF (Type LZ2)

ENGLISH

Before operating the unit, read these operating instructions thoroughly and

keep them for future reference.

* Shows type 45, 56, 73, 106

01_330447_EN.indb 1 2021/3/10 10:32:47

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Installation Instructions51 pages

Questions and Answers

W
Wendy HicksAug 8, 2025
What to do if refrigerant is leaking from my Panasonic S-56MK2E5B?
- A
  adam98Aug 8, 2025
  If you suspect a refrigerant leak, ventilate the room. Then, contact your service dealer for assistance.
M
Michael NavarroAug 25, 2025
Why is my Panasonic S-56MK2E5B making noise during heating?
- D
  David SandersAug 25, 2025
  The noise during heating operation could be due to the defrost operation in process.

Summary

Safety Precautions

Symbol Guide for Safety

Explains hazard symbols (WARNING, CAUTION) and their meanings for safe operation.

Electrical and Refrigerant Hazards

Refrigerant Contact and Fire Safety

Warns about toxic gas from refrigerant contact with flame and electrical safety measures.

Wiring, Grounding, and Power Safety

Details correct wiring, grounding, and exclusive power outlet requirements for safety.

Operational and Environmental Safety

Ignition Source and Storage Safety

Advises against ignition sources in storage and operating areas with flammable gases.

Abnormality Handling and Leak Detection

Guides on stopping operation during abnormalities and handling refrigerant leakage detection.

Alarm Codes and User Handling Safety

R32 Refrigerant Leakage Alarms

Explains alarm displays J01 and J02 related to refrigerant leakage detection sensors.

Precautions for Use

Installation and Wiring Guidelines

Covers proper installation by qualified technicians and adherence to electrical codes.

Troubleshooting - Indoor Unit

Noise and Airflow Issues

Addresses common indoor unit noises, smells, dewdrops, fog, and airflow direction problems.

Dust Discharge and Fan Speed Variations

Troubleshooting - Outdoor Unit & Service

Service Request Guidance

Provides instructions on when to stop operation, contact the dealer, and report symptoms.

Connectable Outdoor Unit Lineup

Summary

Safety Precautions

Symbol Guide for Safety

Explains hazard symbols (WARNING, CAUTION) and their meanings for safe operation.

Electrical and Refrigerant Hazards

Refrigerant Contact and Fire Safety

Warns about toxic gas from refrigerant contact with flame and electrical safety measures.

Wiring, Grounding, and Power Safety

Details correct wiring, grounding, and exclusive power outlet requirements for safety.

Operational and Environmental Safety

Ignition Source and Storage Safety

Advises against ignition sources in storage and operating areas with flammable gases.

Abnormality Handling and Leak Detection

Guides on stopping operation during abnormalities and handling refrigerant leakage detection.

Alarm Codes and User Handling Safety

R32 Refrigerant Leakage Alarms

Explains alarm displays J01 and J02 related to refrigerant leakage detection sensors.

Precautions for Use

Installation and Wiring Guidelines

Covers proper installation by qualified technicians and adherence to electrical codes.

Troubleshooting - Indoor Unit

Noise and Airflow Issues

Addresses common indoor unit noises, smells, dewdrops, fog, and airflow direction problems.

Dust Discharge and Fan Speed Variations

Troubleshooting - Outdoor Unit & Service

Service Request Guidance

Provides instructions on when to stop operation, contact the dealer, and report symptoms.

Connectable Outdoor Unit Lineup

This document provides operating instructions for Panasonic Air Conditioners, specifically the Wall Mounted (Type K2) indoor units, including models S-15MK2E5B, S-22MK2E5B, S-28MK2E5B, S-36MK2E5B, S-45MK2E5B, S-56MK2E5B, S-73MK2E5B, and S-106MK2E5B. It also covers connectable outdoor units for mini VRF (Type LE1, LE2, LZ2), 2WAY VRF (Type ME2), and 3WAY VRF (Type MF3) systems, supporting both R410A and R32 refrigerants.

Function Description

The Panasonic Air Conditioner is designed to provide comfortable room conditions through cooling and heating operations. It functions as an indoor unit in a commercial air conditioning system, connecting to various outdoor VRF units. The unit utilizes a fan to circulate air, and its operation is managed via optional remote controllers (Wireless, Timer, High-spec Wired, or Wired). The system includes features like automatic defrosting during heating and a "DRY" operation mode to manage room humidity.

Important Technical Specifications

Indoor Unit (Wall Mounted - Type K2):

Power Source: 220-230-240 V~ 50-60 Hz for all models.
Cooling Capacity:
- S-15MK2E5B: 1.5 kW (5,100 BTU/h)
- S-22MK2E5B: 2.2 kW (7,500 BTU/h)
- S-28MK2E5B: 2.8 kW (9,600 BTU/h)
- S-36MK2E5B: 3.6 kW (12,300 BTU/h)
- S-45MK2E5B: 4.5 kW (15,400 BTU/h)
- S-56MK2E5B: 5.6 kW (19,100 BTU/h)
- S-73MK2E5B: 7.3 kW (24,900 BTU/h)
- S-106MK2E5B: 10.6 kW (36,200 BTU/h)
Heating Capacity:
- S-15MK2E5B: 1.7 kW (5,800 BTU/h)
- S-22MK2E5B: 2.5 kW (8,500 BTU/h)
- S-28MK2E5B: 3.2 kW (10,900 BTU/h)
- S-36MK2E5B: 4.2 kW (14,300 BTU/h)
- S-45MK2E5B: 5.0 kW (17,100 BTU/h)
- S-56MK2E5B: 6.3 kW (21,500 BTU/h)
- S-73MK2E5B: 8.0 kW (27,300 BTU/h)
- S-106MK2E5B: 11.4 kW (38,900 BTU/h)
Electric Power Input (Cooling/Heating): Ranges from 0.025 kW to 0.080 kW depending on the model.
Sound Pressure Level (dB(A)):
- Cooling: High (34-49), Medium (32-46), Low (29-42)
- Heating: High (49-64), Medium (47-61), Low (44-57)
Unit Dimensions (H×W×D):
- Types 15, 22, 28, 36: 290×870×214 mm
- Types 45, 56, 73, 106: 302×1,120×236 mm
Net Weight: Ranges from 9 kg to 14 kg.
Operation Condition Temperature Range:
- Cooling mode: 14°C~25°C WB
- Heating mode: 16°C~30°C DB

Outdoor Unit (mini VRF - Type LZ2):

Power Source:
- 1-phase: 220-230-240 V~ 50 Hz (U-4LZ2E5, U-5LZ2E5, U-6LZ2E5)
- 3-phase: 380-400-415 V3N~ 50 Hz (U-4LZ2E8, U-5LZ2E8, U-6LZ2E8, U-8LZ2E8, U-10LZ2E8)
Cooling Capacity: Ranges from 12.1 kW to 28.0 kW.
Heating Capacity: Ranges from 12.5 kW to 28.0 kW.
Sound Pressure Level (dB(A)): 52/54 to 60/63 (Cooling/Heating).
Sound Power Level (dB(A)): 69/72 to 81/84 (Cooling/Heating).
Unit Dimensions (H×W×D):
- U-4LZ2E5 to U-6LZ2E8: 996×980×370 mm
- U-8LZ2E8, U-10LZ2E8: 1,500×980×370 mm
Net Weight: Ranges from 94 kg to 133 kg.
Operation Condition Temperature Range:
- Cooling mode: -10°C~52°C DB
- Heating mode: -20°C~18°C WB
Refrigerant Type: R32 (for LZ2 models), R410A (for LE1, LE2, ME2, MF3 models).

Usage Features

Airflow Direction Control: Features vertical airflow direction louvers (not to be adjusted by hand) and manually-operated adjustable horizontal airflow direction louvers.
Emergency Button: Allows for basic operation in case the remote controller is unavailable.
Indicator Lights: Display operation, timer, and standby status.
Remote Control Options: Compatible with Wireless Remote Controller (CZ-RWS3/CZ-RWRC3), Timer Remote Controller (CZ-RTC4), High-spec Wired Remote Controller (CZ-RTC5B), and Wired Remote Controller (CZ-RTC6).
Energy Saving Tips:
- Avoid blocking air intake and outlet.
- Use sunshades, blinds, or curtains during cooling.
- Keep air filters clean.
- Keep windows, doors, and other openings closed to prevent conditioned air from escaping.
Automatic Operation Resume: In case of power failure, the unit will automatically resume operation with previous settings once power is restored.
Defrosting Operation: The unit automatically performs defrosting to melt frost formed on the outdoor unit during heating, indicated by the "STANDBY" display and a temporary stop or slow-down of the indoor fan.
"DRY" Operation: Automatically cycles the outdoor unit on/off and adjusts fan speed to "breeze" to maintain set room temperature and manage humidity.
Safety Precautions: Emphasizes the importance of professional installation, proper grounding, and avoiding flammable materials near the unit. Warns against self-repair and advises contacting a dealer for malfunctions. Specific warnings are provided for R32 refrigerant systems, including the use of R32 refrigerant leakage detection sensors and the actions to take if an alarm (J01, J02, P08) occurs.

Maintenance Features

Air Filter Maintenance:
- Recommended to clean air filters every two weeks, or when the "Filter" indicator appears on the display.
- Filters should be washed gently with water (not hotter than 40°C) and dried thoroughly in the shade.
- After cleaning, reinstall filters in reverse order and press the "Filter reset" button on the remote controller (for Timer Remote Controller).
Cleaning Instructions:
- Do not use benzene, thinner, scouring powder, or harsh chemicals.
- Use only soap (pH7) or neutral household detergent.
- Wipe the indoor unit with a soft, moist cloth.
- Do not pour water on the indoor unit.
- The internal coil and other components of the outdoor unit require periodic cleaning by a dealer or service center.
Safety During Maintenance: Always turn off the air conditioner and disconnect power before cleaning to prevent electric shock or injury from rotating fan parts. Be cautious of sharp metal edges and fins. Use a firm stool or ladder for high-mounted units.
Seasonal Inspection: Consult the nearest dealer for seasonal inspection.
Troubleshooting Guide: Provides a comprehensive list of symptoms, their causes, and recommended actions for common issues like noise, odors, dewdrops, fog, fan operation irregularities, and poor cooling/heating performance.
Error Codes: Mentions specific alarm displays (J01, J02, P08) related to R32 refrigerant leakage detection sensors and advises contacting a service dealer immediately if they appear.