Panasonic CS-HZ9RKE-1

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document provides a comprehensive service manual for Panasonic Inverter Air Conditioners, specifically models CS-HZ9RKE-1, CS-HZ12RKE-1, CS-HZ9RKE-5, and CS-AZ9RKE-1 for indoor units, and CU-HZ9RKE-1, CU-HZ12RKE-1, CU-HZ9RKE-5, and CU-AZ9RKE-1 for outdoor units, designed for North Europe.

Function Description

The air conditioner utilizes Inverter Technology, which offers a wider output power range, enhanced energy saving, quick cooling and heating, and more precise temperature control. It is designed to operate with R32 refrigerant, a non-ozone depleting substance with a lower global warming potential compared to conventional refrigerants.

Key operational improvements include a Quiet mode to reduce indoor unit operating sound, a Powerful mode for rapid room temperature adjustment, and a 24-hour timer setting. A unique "+8/15°C Heat Operation" feature provides heating at low temperature settings, ideal for protecting unoccupied houses and appliances from extreme cold during winter.

The unit incorporates various quality improvements such as random auto restart after power failure, gas leakage protection, prevention of compressor reverse cycle, an inner protector for the compressor, and noise prevention during soft dry operation. For ease of maintenance, it includes a Breakdown Self-Diagnosis function.

Important Technical Specifications

The air conditioners operate on a single-phase 230V, 50Hz power supply.

Cooling Performance (CS-HZ9RKE-1 / CS-HZ9RKE-5 / CS-AZ9RKE-1):

Capacity: 0.85 kW (Min), 2.50 kW (Mid), 3.00 kW (Max)
EER (W/W): 5.00 (Min), 5.49 (Mid), 4.48 (Max)
SEER (W/W): 7.8, Class A++
Annual Consumption: 112 kWh
Indoor Noise (H/L/QLo): 39/25/20 dB-A
Outdoor Noise (H/L/QLo): 46/-/43 dB-A

Cooling Performance (CS-HZ12RKE-1):

Capacity: 0.85 kW (Min), 3.50 kW (Mid), 4.00 kW (Max)
EER (W/W): 5.00 (Min), 4.22 (Mid), 4.04 (Max)
SEER (W/W): 7.6, Class A++
Annual Consumption: 161 kWh
Indoor Noise (H/L/QLo): 42/28/20 dB-A
Outdoor Noise (H/L/QLo): 48/-/45 dB-A

Heating Performance (CS-HZ9RKE-1 / CS-HZ9RKE-5 / CS-AZ9RKE-1):

Capacity: 0.85 kW (Min), 3.20 kW (Mid), 6.65 kW (Max)
COP (W/W): 5.15 (Min), 5.61 (Mid), 3.78 (Max)
SCOP (W/W): 5.2, Class A+++
Annual Consumption: 808 kWh
Indoor Noise (H/L/QLo): 44/24/18 dB-A
Outdoor Noise (H/L/QLo): 47/-/44 dB-A

Heating Performance (CS-HZ12RKE-1):

Capacity: 0.85 kW (Min), 4.20 kW (Mid), 7.75 kW (Max)
COP (W/W): 5.15 (Min), 5.00 (Mid), 3.41 (Max)
SCOP (W/W): 5.1, Class A+++
Annual Consumption: 1043 kWh
Indoor Noise (H/L/QLo): 45/25/18 dB-A
Outdoor Noise (H/L/QLo): 50/-/47 dB-A

Common Specifications:

Refrigerant Type: R32, with a Global Warming Potential (GWP) of 675.
Precharged Amount: 1.12 kg (39.5 oz)
Pipe Diameter (Liquid / Gas): 6.35 mm (1/4") / 9.52 mm (3/8")
Standard Piping Length: 5.0 m (16.4 ft)
Maximum Piping Length: 20 m (65.6 ft)
Maximum I/D & O/D Height Difference: 10.0 m (32.8 ft)
Compressor Type: Hermetic Motor (Rotary), Brushless (4 poles)
Indoor Operation Range: Cooling (16-32°C DB, 11-23°C WB), Heating (16-30°C DB)
Outdoor Operation Range: Cooling (16-43°C DB, 11-26°C WB), Heating (-20-24°C DB, -20-18°C WB)

Usage Features

The air conditioner is controlled via a remote control, offering various settings such as operation mode (Cool, Dry, Heat, Fan), fan speed, air swing, and temperature adjustment. The remote control also features a "Check" button for self-diagnosis and clock setting.

The indoor unit includes an indicator panel with LEDs for Power, Timer, +8/15°C Heat, Deice, Powerful, Quiet, and ECONAVI modes, providing visual feedback on the unit's status. An Auto OFF/ON button on the indoor unit allows basic operation even if the remote control is misplaced or malfunctioning.

ECONAVI operation utilizes a sunlight sensor to detect intensity and differentiate between sunny, cloudy, or night conditions, optimizing energy saving by adjusting the temperature. The sensitivity of the sunlight sensor can be adjusted.

Maintenance Features

The manual emphasizes safety precautions for servicing, especially when dealing with R32 refrigerant, which is slightly flammable. Only qualified personnel should install or service the product. Special tools for R32 refrigerant piping and flare nuts are required, and copper pipes must have a thickness of more than 0.8 mm.

The self-diagnosis function displays alphanumeric error codes (e.g., H11 for indoor/outdoor abnormal communication, F91 for refrigeration cycle abnormality) to assist in troubleshooting. The remote control can be used to display memorized error codes, and there's a procedure to clear these codes after repair.

The manual provides detailed instructions for:

Installation: Selecting the best location for both indoor and outdoor units, fixing the installation plate, drilling piping holes, and connecting cables.
Refrigerant Piping: Using appropriate pipe materials, processing and connecting pipes (cutting, flaring, brazing), and ensuring proper evacuation of the system using a vacuum pump.
Refrigerant Recovery and Re-insertion: Procedures for safely recovering refrigerant and re-inserting new refrigerant in the correct amount.
Brazing: Detailed guidance on preparation for brazing, adjustment of vacuum pump pressure, checking gas provision, flame adjustment, types of flame, and selection of brazing materials. Nitrogen gas flow is recommended during brazing to prevent oxidation.
Troubleshooting: Flowcharts for diagnosing various error codes and malfunctions, including checks for power supply, sensor abnormalities, fan motor issues, communication errors, and refrigerant cycle problems.
Disassembly and Assembly: Step-by-step instructions for removing and assembling indoor unit components (front grille, electronic controller, discharge grille, control board, cross flow fan, indoor fan motor) and outdoor unit electronic controller.

Regular maintenance includes checking air filters, ensuring proper drainage, and verifying the cleanliness of heat exchangers to maintain optimal performance and prevent malfunctions.