Panasonic CS-PZ35TKE - User Manual

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Overview

Key Technical Specifications (examples for CS-PZ25TKE / CU-PZ25TKE and CS-UZ60TKE / CU-UZ60TKE)
Usage Features
Maintenance Features

This document provides service information for Panasonic air conditioners, specifically the CS-PZ25TKE, CS-PZ35TKE, CS-PZ50TKE, and CS-UZ60TKE indoor units, and their corresponding outdoor units (CU-PZ25TKE, CU-PZ35TKE, CU-PZ50TKE, CU-UZ60TKE). The manual is intended for experienced repair technicians and emphasizes safety precautions, particularly regarding the use of R32 refrigerant.

The air conditioners feature Inverter Technology, which allows for a wider output power range, energy saving, quick cooling, quick heating, and more precise temperature control. This technology automatically adjusts output power for maximum comfort by maintaining the set temperature through environmental temperature measurement and temperature shifting. The compressor operates at a frequency instructed by the microcomputer in the indoor unit, which judges conditions based on internal setting temperature and intake air temperature.

For Environmental Protection, these models use R32 refrigerant, which is a non-ozone depleting substance. The manual highlights that while R32 is a slightly flammable refrigerant, its global warming impact is smaller than R410A and R22, and its burning rate is low (10cm/second). Special tools and procedures are required for R32 refrigerant handling due to its higher working pressure compared to R22.

Key Technical Specifications (examples for CS-PZ25TKE / CU-PZ25TKE and CS-UZ60TKE / CU-UZ60TKE):

Power Supply: Single phase, 230V, 50Hz for all models.
Capacity (Cooling):
- CS-PZ25TKE: Mid. 2.50 kW (8530 BTU/h)
- CS-UZ60TKE: Mid. 6.25 kW (21300 BTU/h)
Input Power (Cooling):
- CS-PZ25TKE: Mid. 690 W
- CS-UZ60TKE: Mid. 1.93 kW
EER (Cooling):
- CS-PZ25TKE: Mid. 3.62 W/W (12.36 BTU/hW)
- CS-UZ60TKE: Mid. 3.24 W/W (11.04 BTU/hW)
SEER:
- CS-PZ25TKE: 5.8 (A+)
- CS-UZ60TKE: 6.2 (A++)
Capacity (Heating):
- CS-PZ25TKE: Mid. 3.15 kW (10700 BTU/h)
- CS-UZ60TKE: Mid. 6.80 kW (23200 BTU/h)
Input Power (Heating):
- CS-PZ25TKE: Mid. 770 W
- CS-UZ60TKE: Mid. 1.94 kW
COP (Heating):
- CS-PZ25TKE: Mid. 4.09 W/W (13.90 BTU/hW)
- CS-UZ60TKE: Mid. 3.51 W/W (11.96 BTU/hW)
SCOP:
- CS-PZ25TKE: 4.1 (A+)
- CS-UZ60TKE: 3.9 (A)
Indoor Noise (Cooling/Heating):
- CS-PZ25TKE: 37/26/20 dB-A (H/L/Q-Lo)
- CS-UZ60TKE: 45/37/34 dB-A (H/L/Q-Lo)
Outdoor Noise (Cooling/Heating):
- CS-PZ25TKE: 48 dB-A (H/L/Q-Lo)
- CS-UZ60TKE: 49 dB-A (H/L/Q-Lo)
Refrigerant Type: R32
Refrigerant Charge:
- CS-PZ25TKE: 580 g (20.5 oz)
- CS-UZ60TKE: 1.15k g (40.6 oz)
Piping: Liquid 6.35 mm (1/4"), Gas 9.52 mm (3/8") for PZ25/35, Gas 12.70 mm (1/2") for PZ50/UZ60. Standard length 5.0 m, max length 15 m (PZ25/35/50) to 30 m (UZ60).
Dimensions (Indoor Unit):
- Height: 290 mm (11-7/16")
- Width: 850 mm (33-15/32") for PZ25/35/50, 1070 mm (42-5/32") for UZ60
- Depth: 199 mm (7-27/32") for PZ25/35, 214 mm (8-7/16") for PZ50, 240 mm (9-15/32") for UZ60

Usage Features:

Remote Control: Easy-to-use remote control with options for fan speed, operation mode (OFF/ON, Powerful/Quiet), temperature setting, airflow direction, timer, and clock.
Automatic Operation: The unit automatically determines the operating mode (Cool, Dry, Heat) based on indoor intake air temperature and remote control settings.
Quiet Operation: A dedicated "POWERFUL/QUIET" button on the remote control allows for reduced indoor unit operation sound.
Powerful Mode: This mode quickly reaches the desired room temperature by shifting the internal setting temperature lower (up to 2°C for Cooling/Soft Dry) or higher (up to 3.5°C for Heating) for 20 minutes.
Timer Control: Two sets of ON and OFF timers are available. The unit can start operating earlier than the set ON time to ensure a comfortable environment.
Random Auto Restart Control: After a power failure, the compressor will re-operate within 3-4 minutes (with 10 random patterns) once power resumes. This feature is not applicable during ON/OFF Timer settings.
Airflow Direction: Both vertical (horizontal vane) and horizontal (vertical vanes) airflow directions can be controlled automatically or manually via the remote.

Maintenance Features:

Breakdown Self Diagnosis Function: The unit includes a self-diagnosis function that displays error codes (three-digit alphanumeric codes) on the remote control and blinks the Timer LED when an abnormality occurs. This allows technicians to quickly identify and troubleshoot issues.
Protection Control:
- Restart Control: Compressor will not turn on within 3 minutes of stopping.
- Total Running Current Control: Adjusts frequency or stops the compressor if the outdoor unit's running current exceeds set values.
- IPM (Power Transistor) Prevention Control: Protects against overheating (compressor stops if IPM temperature rises to 120°C) and DC peak current (stops if current exceeds set values).
- Compressor Overheating Prevention Control: Regulates frequency or stops the compressor if discharge temperature exceeds 103°C.
- Low Pressure Prevention Control (Gas Leakage Detection): Stops the compressor if low pressure is detected, indicating potential gas leakage.
- Low Frequency Protection Control: Adjusts frequency if the compressor operates at a low frequency for an extended period.
- Outdoor Air Temperature Control: Regulates compressor frequency based on outdoor air temperature.
- Cooling Overload Control: Stops the compressor if outdoor pipe temperature exceeds 61°C.
- Freeze Prevention Control: Stops the compressor if indoor heat exchanger temperature is too low (below 0°C) to prevent freezing.
- Dew Prevention Control: Adjusts fan speed to prevent dew formation at the indoor unit discharge area.
- Odor Cut Control: Reduces odors released from the unit by temporarily stopping the indoor fan.
- Heating Operation Protection Controls: Includes intake air temperature control, outdoor air temperature control, overload protection, low temperature compressor oil return control, and cold draught prevention.
- Deice Operation: Initiates deicing when outdoor pipe and air temperatures are low.
Troubleshooting Guide: The manual provides detailed flowcharts for diagnosing various error codes and malfunctions, including steps to check connections, sensors, and PCBs.
Installation and Servicing Air Conditioner using R32: Specific guidelines are provided for handling R32 refrigerant, including required tools (flare gauges, torque wrenches, manifold gauges, vacuum pumps, digital scales, refrigerant cylinders), piping materials (copper pipes with specific thickness), and procedures for installation, relocation, repairing, air purging, and refrigerant recovery. It emphasizes the importance of using manufacturer-specified parts and avoiding mixing refrigerants.