Panasonic U-4LE1E5 Service Manual

Mini vrf system

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Installation instructions manual (224 pages)

Service manual (141 pages)

Operating instructions manual (180 pages)

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Model No.

Outdoor Unit

Class

4HP

U-4LE1E5

Model Name

HP = horsepower

Indoor Unit

Class

4-Way Cassette

S-22MU1E5

4-Way Cassette 60×60

S-22MY1E5

2-Way Cassette

S-22ML1E5

1-Way Cassette

Low Silhouette Ducted

S-22MF1E5

Slim Low Static Ducted

S-22MM1E5

Ceiling

S-22MK1E5

Wall Mounted

Concealed Floor

S-22MR1E5

Standing

Floor Standing

S-22MP1E5

High Static Pressure

Ducted

85464849296000

5HP

6HP

U-5LE1E5

U-6LE1E5

S-28MU1E5

S-36MU1E5

S-45MU1E5

S-28MY1E5

S-36MY1E5

S-45MY1E5

S-28ML1E5

S-36ML1E5

S-45ML1E5

S-28MD1E5

S-36MD1E5

S-45MD1E5

S-28MF1E5

S-36MF1E5

S-45MF1E5

S-28MM1E5

S-36MM1E5

S-45MM1E5

S-36MT1E5

S-45MT1E5

S-28MK1E5

S-36MK1E5

S-45MK1E5

S-28MR1E5

S-36MR1E5

S-45MR1E5

S-28MP1E5

S-36MP1E5

S-45MP1E5

Mini VRF System

S-56MU1E5

S-73MU1E5

S-56MY1E5

S-56ML1E5

S-73ML1E5

S-56MD1E5

S-73MD1E5

S-56MF1E5

S-73MF1E5

S-90MF1E5

S-56MM1E5

S-56MT1E5

S-73MT1E5

S-56MK1E5

S-73MK1E5

S-56MR1E5

S-71MR1E5

S-56MP1E5

S-71MP1E5

S-73ME1E5

106

140

S-106MU1E5

S-140MU1E5

S-160MU1E5

S-106MF1E5

S-140MF1E5

S-160MF1E5

S-106MT1E5

S-140MT1E5

S-106MK1E5

S-106ME1E5

S-140ME1E5

SM830196-00

REFERENCE NO.

160

Table of Contents

Summary of Contents for Panasonic U-4LE1E5

Page 1 Mini VRF System Model No. Outdoor Unit Class U-4LE1E5 U-5LE1E5 U-6LE1E5 Model Name HP = horsepower Indoor Unit Class 4-Way Cassette S-22MU1E5 S-28MU1E5 S-36MU1E5 S-45MU1E5 S-56MU1E5 S-73MU1E5 S-106MU1E5 S-140MU1E5 S-160MU1E5 4-Way Cassette 60×60 S-22MY1E5 S-28MY1E5 S-36MY1E5 S-45MY1E5 S-56MY1E5 2-Way Cassette...
Page 2 Ssc greater than or equal to the value in unit. the table. • ELCB must be incorporated in the fixed wiring. U-4LE1E5 U-5LE1E5 U-6LE1E5 Circuit breaker must be incorporated in the fixed wiring 332.09 kW 389.52 kW 501.89 kW in accordance with the wiring regulations.
Page 3 When Installing… When Servicing • Turn the power OFF at the main power box Select an installation location which is rigid and strong (mains) before opening the unit to check or repair enough to support or hold the unit, and select a location electrical parts and wiring.
Page 4 Check of Density Limit The standards for minimum room volume are as follows. (1) No partition (shaded portion) The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its density will not exceed a set limit. The refrigerant (R410A), which is used in the air conditioner, is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to protect the ozone layer.
Page 5 Contents 1. Address Settings (Outdoor Units) ......................... 1-1 1. Test Run .......................... 2. Settings of Indoor Unit Control PCB ................3. Auto Address Setting ..................... 2. Remote Controller Functions ................... 1. Remote Controller Test Run Settings ................2. Simple Settings Function ....................3.
Page 6 Mini VRF SYSTEM Address Settings Contents 1. Address Settings (Outdoor Units) 1. Test Run ..........................1-2 2. Settings of Indoor Unit Control PCB ................. 1-3 3. Auto Address Setting ......................1-5 3-1. Auto Address Setting ...................... 1-5 3-2. Automatic Address Setting from the Remote Controller ..........1-10 3-3.
Page 7 Mini VRF SYSTEM Address Settings 1. Test Run Test Run Procedure Items to Check Before the Test Run 1. Turn the remote power switch on at least 5 hours before the test, in order to energize the crankcase heater. 2. Turn the outdoor service valves (2 locations) to the full-open positions. Use caution when making the settings.
Page 8 Mini VRF SYSTEM Address Settings 2. Settings of Indoor Unit Control PCB (for single-phase outdoor unit PCB) S004 D303 (LED2) CN-A.ADD D302 (LED1) CN-MODE S003 S002 CN-TERMINAL...
Page 9 Mini VRF SYSTEM Address Settings 2. Settings of Indoor Unit Control PCB Examples of the No. of indoor units settings Indoor unit setting (S004) No. of indoor units (Rotary switch, gray) set to 1 1 unit (factory setting) set to 2 2 units set to 9 9 units...
Page 10 Mini VRF SYSTEM Address Settings 2. Settings of Indoor Unit Control PCB 3-1. Auto Address Setting Basic wiring diagram: Example (1) • If link wiring is not used (The inter-unit control wires are not connected to multiple refrigerant systems.) Indoor unit addresses can be set without operating the compressors. No.
Page 11 Mini VRF SYSTEM Address Settings 3. Auto Address Setting Basic wiring diagram: Example (2) • If link wiring is used * When multiple outdoor units exist, remove the socket that is used to short-circuit the terminal plug (CN-TERMINAL) from all outdoor unit PCBs except for 1.
Page 12 Mini VRF SYSTEM Address Settings 3. Auto Address Setting Automatic Address Setting (no compressor operation) Case 2 Indoor and outdoor unit power can be turned ON for each system separately. Indoor unit addresses can be set without operating the compressors. Automatic Address Setting from Outdoor Unit On the outdoor unit control PCB, check that the system address rotary switch (S002) is set to “1”...
Page 13 Mini VRF SYSTEM Address Settings 3. Auto Address Setting Case 3A Automatic Address Setting in Heating Mode Indoor and outdoor unit power cannot be turned ON for each system separately. In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating. Therefore perform this process only after completing all refrigerant tubing work.
Page 14 Mini VRF SYSTEM Address Settings 3. Auto Address Setting Automatic Address Setting in Cooling Mode Case 3B Indoor and outdoor unit power cannot be turned ON for each system separately. In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating. Therefore perform this process only after completing all refrigerant tubing work.
Page 15 Mini VRF SYSTEM Address Settings 3. Auto Address Setting 3-2. Automatic Address Setting from the Remote Controller * Selecting each refrigerant system individually for automatic address setting ---Automatic address setting for each system: Item code “A1” Press the remote controller timer time button and button at the same time.
Page 16 Mini VRF SYSTEM Address Settings 3. Auto Address Setting 3-4. Request concerning recording the indoor/outdoor unit combination Nos. After automatic address setting has been completed, be sure to record them for future reference. List the outdoor unit system address and the addresses of the indoor units in that system in an easily visible location (next to the nameplate), using a permanent marking pen or similar means that cannot be erased easily.
Page 17 – MEMO – 1-12...
Page 18 Mini VRF SYSTEM Remote Controller Functions Contents 2. Remote Controller Functions 1. Remote Controller Test Run Settings ................2-2 2. Simple Settings Function....................2-3 3. Detailed Settings Function ....................2-5 4. Remote Controller Servicing Functions ................2-18...
Page 19 Mini VRF SYSTEM Remote Controller Functions 1. Remote Controller Test Run Settings Wired Remote Controller Test Run Settings Press the remote controller button for 4 seconds or longer. “TEST” appears on the LCD display while the test run is in progress. Then press the button.
Page 20 Mini VRF SYSTEM Remote Controller Functions 2. Simple Settings Function This allows the filter lifetime, operating mode priority [Remote Controller Functions Section] change, central control address, and other settings to be made for an individual or group-control indoor unit to which the remote controller used for simple settings is connected.
Page 21 Mini VRF SYSTEM Remote Controller Functions 2. Simple Settings Function List of Simple Setting Items Setting data Item code Item Description 0000 Not displayed 0001 150 hours 0002 2,500 hours Filter sign ON time (ﬁ tlter life time) 0003 5,000 hours 0004 10,000 hours 0005...
Page 22 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function This allows the system address, indoor unit address, and other settings to be made for the individual or group-control indoor unit to which the remote controller used for detailed settings is connected. When detailed settings mode is engaged, operation stops at the individual or group-control indoor unit where the remote controller used for...
Page 23 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function Setting the Flap Separately (When setting the CZ-RTC2) Press the timer time buttons to select 1) The 4-air outlet flap can be adjusted separately during the desired setting data. operation. When not adjusted separately, all flaps operate Flap position in the same manner.
Page 24 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function List of Detailed Setting Items Setting data Item code Item Description Description Description 4-Way Casstte (60×60) 0001 0002 2-WAY Cassette (L1) 0003 1-Way Cassette (D1) (U1, Y1) Low Silhouette Ducted (F1) High Static Pressure Type 0005...
Page 25 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function Setting data Item code Item Description 0000 5 minutes (1B) Forced thermostat ON time 0001 4 minutes –010 –10°C –009 –9°C Cooling discharge –008 –8°C temperature shift 0010 10°C –010 –10°C –009 –9°C...
Page 26 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function Setting data Item code Item Description 0000 No forced operation 0001 Forced operation for 1 minute Automatic drain pump operation 0060 Continuous operation 0000 None Ventilation fan operation 0001 Ventilation fan operated by remote controller. Wired remote controller 0000 Not used.
Page 27 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function Setting data Item code Item Description DC fan tap operating Purpose mode 0000 Standard Standard (setting at shipment) High ceiling use High ceiling setting 1 (with standard panel) 0001 For low Ultra long-life ﬁ...
Page 28 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function Simple setting items Item code Item Description Filter sign ON time setting Changes the indoor unit ﬁ lter lifetime when a high-performance ﬁ lter or other (ﬁ lter lifetime) optional product is installed. Reduces the ﬁ...
Page 29 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function Item code Item Description Set when using a central control device. Central control address Used when setting the central control address manually from the remote controller. Operating mode priority change Note (1) NOTE (1) Explanation of operation mode priority change...
Page 30 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function When the operating mode at the priority remote controller is changed, the operating modes of other remote controllers change as shown below. Mode change at priority remote controller Operating modes at other remote controllers Current mode New mode Current mode...
Page 31 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function Item code Item Description Unit type Set when the indoor unit EEPROM memory is replaced during servicing. Indoor unit capacity System (outdoor unit) address These are not set at the time of shipping from the factory. These must be set after installation if automatic address setting is not Indoor unit address performed.
Page 32 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function Item code Item Description 1F (Upper limit) Cooling 20 (Lower limit) 21 (Upper limit) This setting changes the temperature range (upper limit and lower limit) Heating 22 (Lower limit) Change to the remote which is set from the remote controller or central control device.
Page 33 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function (Continued from previous page) Item code Item Description Heat exchanger temperature for The heat exchanger temperature control point for prevention of cold air cold air discharge discharge during heating operation can be changed. The indoor unit PCB optional output for the fan can be switched Fan output switching according to the purpose of use.
Page 34 Mini VRF SYSTEM Remote Controller Functions 3. Detailed Settings Function Selecting the DC fan motor tap (when setting from the PCB) 4-Way Cassette type <Procedure> Stop the system before performing these steps. Open the electrical component box cover, then check the indoor unit control PCB. Connect the jumper connector (2P: yellow) which was supplied with the accessory to the correct connector pin on the indoor unit control PCB according to the setting number which was confirmed in “...
Page 35 Mini VRF SYSTEM Remote Controller Functions 4. Remote Controller Servicing Functions The remote controller includes a number of servicing functions. Use these as needed for test runs and inspections. List of Servicing Functions Functions Description Button operation Reset operation Unit status Operation with Press and hold the button...
Page 36 Mini VRF SYSTEM Remote Controller Functions 4. Remote Controller Servicing Functions Test Run Function Operates the unit with the thermostat forced ON. <Procedure> ➀ Press and hold the button for 4 seconds or longer. ➁ “Test” appears on the remote controller LCD display (Fig.
Page 37 Mini VRF SYSTEM Remote Controller Functions 4. Remote Controller Servicing Functions ■ Sensor Temperature Display Function (displayed regardless of whether unit is operating or stopped) The procedure below displays the sensor temperatures from the remote controller, indoor unit, and outdoor unit on the remote controller. <Procedure>...
Page 38 Mini VRF SYSTEM Remote Controller Functions 4. Remote Controller Servicing Functions Indoor unit sensors Outdoor unit sensors Intake temp. Unit No.1 Discharge temp. 1 — High-pressure sensor temp. Discharge temp. Heat exchanger gas 1 Discharge temp. setting Heat exchanger liquid 1 Position of indoor unit electronic —...
Page 39 – MEMO – 2-22...
Page 40 Mini VRF SYSTEM Trouble Diagnosis Contents 3. Trouble Diagnosis...
Page 41 Mini VRF SYSTEM PCB Settings Contents 4. PCB Settings 1. Outdoor Unit Control PCB ....................4-2 1-1. Single-Phase Unit......................4-2 1-2. Functions of Outdoor Unit PCB ..................4-3...
Page 42 Mini VRF SYSTEM PCB Settings 1. Outdoor Unit Control PCB 1-1. Single-Phase Unit CN32 SHORT OPEN (Terminal Plug) S003 S002 S004 POWER LED AUTO ADDRESS TEST STOP MODE LED1 LED2 (CN44) (CN46) (CN48) (CN49) (CN50) (D042) (D043) (D019) (CN51)
Page 43 Mini VRF SYSTEM PCB Settings 1. Outdoor Unit Control PCB 1-3. Functions of Outdoor Unit PCB Automatic address 2P plug (white): Automatic address setting pin setting (CN-A. ADD) • Short-circuit this pin for 1 second or longer to automatically set the addresses at the indoor units that are connected to that outdoor unit and are within the same system.
Page 44 Mini VRF SYSTEM PCB Settings 1. Outdoor Unit Control PCB LED1, 2 LED (red × 2) (D302, D303) • LED 1 and 2 blink alternately while automatic address setting is in progress. • Display the alarm contents for alarms that are detected by the outdoor unit. Power LED LED (green): Power indicator (D330)
Page 45 Mini VRF SYSTEM PCB Settings 1. Outdoor Unit Control PCB Table 4-1. Setting the System Address [S002: Rotary switch (yellow), S003: 2P DIP (black)] Outdoor system S002 setting (system S003 setting address No. address switch) 1P (10s digit) 2P (20s digit) 1 refrigerant system only Link wiring...
Page 46 – MEMO –...
Page 47 Mini VRF SYSTEM Self-Diagnostics Function Table Contents 5. Self-Diagnostics Function Table 1. Self-Diagnostics Function Table ..................5-2...
Page 48 Mini VRF SYSTEM Self-Diagnostics Function Table 1. Self-Diagnostics Function Table Self-Diagnostics Function Table • Causes and corrections in instances when automatic address setting cannot be started. Trouble Cause and correction The power LED on the outdoor unit control PCB does Check for any errors in the power wiring to the outdoor not turn ON.
Page 49 Mini VRF SYSTEM Self-Diagnostics Function Table 1. Self-Diagnostics Function Table Check items E16 E20 Check that the indoor unit power is turned ON. Check that the inter-unit control wiring is connected correctly. (Check that there are no open circuits, short circuits, terminal plugs, incorrect wiring to the remote controller terminals, or similar problems.) Check that the remote controller wiring is connected correctly.
Page 50 Mini VRF SYSTEM Self-Diagnostics Function Table 1. Self-Diagnostics Function Table • The outdoor unit maintenance remote controller can be used to check the alarm display. The number of times that LED 1 and 2 blink on the outdoor unit control PCB can be used to check the alarm display.
Page 51: Table Of Contents
Mini VRF SYSTEM Service Checker Contents 6. Service Checker 1. Outdoor Unit Maintenance Remote Controller ..............6-2 1-1. Overview ........................6-2 1-2. Functions ........................6-3 1-3. Ordinary Display Controls and Functions ............... 6-4 1-4. Monitoring Operations ....................6-9 1-5. Outdoor Unit Alarm History Monitor ................6-11 1-6.
Page 52: Service Checker
Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller 1-1. Overview [Service Checker Section] About the outdoor unit maintenance remote controller The outdoor unit utilizes nonvolatile memory (EEP- ROM) on its PCB. This allows EEPROM data to replace the setting switches that were present on pre- vious PCBs.
Page 53: Functions
Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller 1-2. Functions Functions on the ordinary display (1) Press the buttons to execute the following functions. • All indoor units stop/start • Cooling/heating change • All indoor units test run (2) Display: The following displays are possible.
Page 54: Ordinary Display Controls And Functions
Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller 1-3. Ordinary Display Controls and Functions Functions on the ordinary display Connect the special service checker wiring to the outdoor unit PCB. The connection diagram is shown below. RC (3P, blue) Outdoor unit PCB PCB connector (3P, blue) Special service checker wiring...
Page 55 Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller All units start/stop (Fig. 6-1) <Operation> (ON/OFF operation) button can be used to start and stop all indoor units. • The LED illuminates if any indoor unit is operating. •...
Page 56 Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller ■ Display (functions) • Use the temperature setting buttons to change the item code. Item code Item Remarks ➀ Outdoor unit alarm ➁ Alarm code display No. of connected indoor units Quantity Unit Nos.
Page 57 Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller ➂ XX-YY system Displays the outdoor unit sub-bus address which is currently selected. XX = Outdoor unit system address on main bus line (1 – 30) YY = Outdoor unit sub-bus address (1) "1"...
Page 58 Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller Concerning the 7-segment 4-digit display of remote controller timer time The unit Nos. of connected units are indicated by four 7-segment digits ( ) and a colon. • Display of unit Nos. 1 - 20 Meaning of colon 1 –...
Page 59: Monitoring Operations
Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller 1-4. Monitoring Operations Displays the indoor unit and outdoor unit sensor temperatures. <Operating procedure> ➀ Press and hold the (CHECK) and (CANCEL) buttons simultaneously for 4 seconds or longer to engage temperature monitor mode. During temperature monitoring, (CHECK) illuminates.
Page 60 Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller Display of unit No. 1 (main unit) Description Remarks Intake temp. °C °C °C °C Indoor unit Discharge temp. °C Discharge temp. setting °C Indoor unit electronic control valve position STEP Discharge temp.
Page 61: Outdoor Unit Alarm History Monitor
Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller 1-5. Outdoor Unit Alarm History Monitor • Displays outdoor unit alarms only. • Check the indoor unit alarm histories separately using the indoor unit remote controllers or other control device. <Operating procedure>...
Page 62: Setting The Outdoor Unit Eeprom Data
Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller 1-6. Setting the outdoor unit EEPROM data Display of ﬁ rst 4 digits ■ Setting mode 1 <Operating procedure> ➀ Press and hold the (CHECK) button and (VENTILATION) button simultaneously for 4 seconds or longer.
Page 63 Mini VRF SYSTEM Service Checker 1. Outdoor Unit Maintenance Remote Controller ■ Setting mode 2 <Operating procedure> ➀ Press and hold the (CHECK) button, button, and button simultaneously for 4 seconds or longer. ➁ Press the temperature setting buttons to change the item code.
Page 64 – MEMO – 6-14...
Page 65 201108...

This manual is also suitable for:

U-5le1e5 U-6le1e5 S-22mu1e5 S-28mu1e5 S-36mu1e5 S-45mu1e5 ... Show all

Panasonic U-4LE1E5 Service Manual

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Summary of Contents for Panasonic U-4LE1E5

Page 51: Table Of Contents

Page 52: Service Checker

Page 53: Functions

Page 54: Ordinary Display Controls And Functions

Page 59: Monitoring Operations

Page 61: Outdoor Unit Alarm History Monitor

Page 62: Setting The Outdoor Unit Eeprom Data

This manual is also suitable for: