Panasonic CU-E18DBE Service Manual

Text of Panasonic CU-E18DBE User Guide:

• Panasonic CU-E18DBE, 10.4.5. Recharging Refrigerant During Servicing When recharging is necessary, insert the specified amount of new refrigerant in accordance with the following procedure. 1. Connect the charging hose to the service port of the outdoor unit. 2. Connect the charging hose to the vacuum pump adaptor. At this time, fully open the 2-way valve and 3-way valve. 3. Fully open the handle Lo of the manifold gauge, turn on the power of the vacuum pump and continue the vacuum process for at least one hour. 4. Confirm that the low pressure gauge shows a reading of -0.1 Mpa (-76 cmHg), then fully close the handle Lo, and turn off the vacuum pump. Wait for 1

• Panasonic CU-E18DBE, • Remove the control box cover and lead the connecting cable into the control box. • Check the color of the wires on the terminal board and secure them with screws. • Secure the outer sheath of the connecting cable with the cord clamp. • Reattach the control box cover to its original position. CAUTION When connecting the connecting cable, provide approximately 40 cm of extra length near the unit to facilitate servicing of electrical parts. • Connecting cable between indoor unit and outdoor unit should be approved polychlo

• 8.2.3.4. Deice Control • Deice starts to prevent frosting at outdoor heat exchanger. • Deice operation detection commences after minimum 60 minutes of Heating Operation. • The outdoor heat exchanger temperature drops below 3°C for long period (minimum 40 minutes) during compressor is in operation, the deice operation may starts. 31 CS-E15DD3EW CU-E

• Panasonic CU-E18DBE, PREPARING TO INSTALL THE INDOOR UNIT • Fit the drain hose insulation 7 around the drain hose as shown in the diagram beside. • Attach the discharge chamber. ( ) (10 screws) • Cut out the intake cut-out portions at the unit rear panel using a cutter or other tools to make openings. • Remove the two screws at the rear edge of the unit top panel and attach the intake chamber. ( ) (8 screws) Securing the Hanging Bolts Switching the High State Switch (SW2) • To increase the air volume, open the control box and on the control board, switch the high state switch (SW2) to “HI”. • See the diagram for “Connecting the Indoor/Outdoor Connecting Cable”.

• Panasonic CU-E18DBE, 8.1.7. Outdoor Fan Motor Operation Outdoor fan motor is operated with 15 fan speed. It starts when compressor starts operation and it stops 30 seconds after compressor stops operation for speed no.8. No. RPM during Fan Speed (rpm) E18D E15D 15 73 71 14 73 71 13 68 66 12 66 64 11 62 60 10 60 60 9 58 58 8 50 50 7 45 45 6 40 40 5 35 35 4 30 30 3 25 25 2 20 20 1 15 15 8.1.8. Quiet operation (Cooling Mode/Cooling area of Dry Mode) A. Purpose To provide quiet cooling operation compare to normal operation. B. Control condition a. Quiet operation start condition • When “quiet” button at remote control is pressed. Quiet LED illuminates. b. Quiet operation stop condition 1. When one of t

• Panasonic CU-E18DBE, 11 Installation Instructions Required tools for Installation Works 1. Philips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter 2. Level gauge 6. Pipe cutter 10. Measuring tape 14. Torque wrench 18 N.m (1.8 kgf.m) 55 N.m (5.5 kgf.m) 3. Electric drill, hole core drill (ø70 mm) 7. Reamer 11. Thermometer 15. Vacuum pump 4. Hexagonal wrench (4 mm) 8. Knife 12. Megameter 16. Gauge manifold set 11.1. Safety Precautions • Read the following “SAFETY PRECAUTIONS” carefully before installation. • Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and mai

• Panasonic CU-E18DBE, 3. Control contents In the outdoor fan speed no. i) In protectorate Domain A is referred to as min 660 rpm. ii) In protectorate Domain B, it is referred to as min 600 rpm. 4. Condition resolutive It is canceled when it stops satisfying all of the above-mentioned. 8.2.2.3. Anti-Freezing Control 1. When indoor heat exchanger temperature is lower than 7°C continuously for six minutes, compressor will stop operating. 2. Compressor will resume its operation three minutes after the indoor heat exc

• Panasonic CU-E18DBE, 5. Charging hose • The pressure resistance of the charging hose has been raised to match the higher pressure of R410A. The hose material has also been changed to suit HFC use, and the size of the fitting has been changed to match the manifold ports. 6. Vacuum pump adaptor • When using a vacuum pump for R410A, it is necessary to install an electromagnetic valve to prevent the vacuum pump oil from flowing back into the charging hose. The vacuum pump adaptor is installed for that purpose. if the vacuum pump oil (mineral oil) becomes mixed with

• Panasonic CU-E18DBE, 12.4. Auto OFF/ON Button • The “Auto OFF/ON” button is used to operate the air conditioner if remote control is misplaced or malfunctioning. • Auto operation is started once “Auto OFF/ON” button is pressed. • Forced cooling operation is possible by pressing the “Auto OFF/ON” button for more than 5 seconds where “beep” sound is heard, then release the button. • By continuously pressing the “Auto OFF/ON” button, it will enable standby states for Forced Heating Operation, Various Setting Mode and Individual Correspondence Mode. At standby state, the unit still operates with Forced Coolin

• Panasonic CU-E18DBE, 8.1.5. Automatic Operation This mode can be set using remote control and the operation is decided by remote control setting temperature, indoor intake air temperature and outdoor air temperature. During operation mode judgment, indoor fan motor (with speed of Lo-) and outdoor fan motor are running for 30 seconds to detect the indoor intake and outdoor air temperature. The operation mode is decided based on below chart. Values of T1, T2, and T3 depend on remote control setting temperature, as shown in below table. After the adjustment

• Panasonic CU-E18DBE, 14 Exploded View (Indoor Unit) 14.1. CS-E15DD3EW CS-E18DD3EW Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts. 75 CS-E15DD3EW CU-E15DBE / CS-E18DD3EW CU-E18DBE

• Panasonic CU-E18DBE, 11.3.4. EVACUATION OF THE EQUIPMENT (FOR EUROPE & OCEANIA DESTINATION) WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure. 1. Connect a charging hose with a push pin to the Low and High side of a charging set and the service port of the 3-way valve. • Be sure to connect the end of the charging hose with the push pin to the service port. 2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pu

• Panasonic CU-E18DBE, CAUTION 1. This equipment must be earthed. It may cause electrical shock if grounding is not perfect. 2. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire. 3. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture. ATTENTION 1. Selection of the installation location and installation. Select an installation location which is rigid and strong enough to support or hold the unit, and select a location

• Panasonic CU-E18DBE, 10.3. Refrigerant Piping Work When working with refrigerant piping, the following points must be carefully observed: no moisture od dust must be allowed to enter the piping, and there must be no refrigerant leaks. 1. Procedure and precautions for flaring work a. Cut the pipe Use a pipe cutter, and cut slowly so the pipe will not be deformed. b. Remove burrs and clean shavings from the cut surface If the shape of the pipe end is poor after removing burrs, or if shavings adhere to the flared area, it may lead to refrigerant leaks. To prevent this, turn the cut surface downward and remove burrs, then clean the surface, carefully. c. Inse

• SCHEMATIC DIAGRAM 4/4 C HO CE Vcc IN COM C HO CE Vcc IN COM C HO CE U OUT V OUT W OUT roc CF0 Vcc IN COM Vcc IN(X) IN(Y) IN(X) VFO GND R194 R193 C106 0.47µ 630V D27 D41 D26 1000p x3 HV1C1 HV1C2 HV1C3 LVIC Q17 P U 3 2 1 7 8 6 5 13 12 10 9 14 19 20 18 15 4 V W U V W N RED BLUE YELLOW COMPRESSOR C81 0.047µ 25V C78 47µ 25V 0.1Ω 2% 1/4W X20 R191 11 21 C76 0.047µ 25V C90 0

• Panasonic CU-E18DBE, 3.2. CS-E18DD3EW CU-E18DBE Unit CS-E18DD3EW CU-E18DBE Cooling Capacity kW kcal/h BTU/h 5.10 (0.90 - 5.70) 4,390 (770 - 4,900) 17,400 (3,070 - 19,400) Heating Capacity kW kcal/h BTU/h 6.10 (0.90 - 7.10) 5,250 (770 - 6,110) 20,800 (3,070 - 24,200) Moisture Removal l/h Pint/h 2.8 (5.9) Power Source (Phase, Voltage, Cycle) ø V Hz Single 230 - 240 50 Airflow Method OUTLET INTAKE SIDE VIEW TOP VIEW Air Volume Lo m 3 /min (cfm) Cooling; 7.4 (260) — Heating; 8.7 (310) Me m 3 /min (cfm) Cooling; 8.8 (310) — Heating; 10.2 (360) Hi m 3 /mi

• How to use electronic circuit diagram TIMER TABLE <INDOOR> Test mode Name Time (When test point Short-circuited) 4 way valve abnormality 4 min. 24 sec. Outdoor air temp. for Hz No. decision 30 min. 0 sec. Anti-dew formation control 20 min. 0 sec. Anti-freezing control 6 min. 0 sec. Thermo OFF delay 3 min. 0 sec. Low pressure control (gas leakage) compressor OFF ti

• Panasonic CU-E18DBE, SCHEMATIC DIAGRAM 2/4 R190 7.5Ω 5W R103 9.53k 1% R104 51.5k 1% C50 1000p D17 C45 1000p R109 11.3k R91 49.9k R110 3.74k 1% R92 15k R83 1.8k R100 374k 1% e e cc b b Q13 Q11 10k 4.7k 10k 4.7k IC4 IC4 7 5 6 IC3 IC3 R82 1.8k R79 10k Q7 2SC3441 C51 1000p R108 82.5k 1% R99 15.0k 1% R98 3.74k 1% R107 3.74k 1% R102 3.74k c b e R80 100Ω R101 100Ω RY-C D14 ERA15-01 ZD5 RD10EB2 R69 33Ω 1/4W 1 3 2 7 5 6 R90 100Ω R111 464k 1/4W 1% R112 464k 1/4W 1% R113 11k 1/4W 1% R125 47k 2W R128 47k 2W R154 3k 1/4W R114 464k 1/4W 1% R115 464k 1/4W 1% R116 10.7k 1/4W 1% D21 D20 1

• Panasonic CU-E18DBE, 1. Unscrew the 4 screws on the Upper and Inner Casing and detach them 1. First detach the Upper and Inner Casing (12.4.1.). 2. Unscrew the 2 screws on the Slide Guide. 3. Pull the board down following the Slide Guide. 4. Lift the Board up from the bottom, disengage the Catch holding the Board and open it. 12.5. Disassembly of Parts 12.5.1. Detaching the Upper and Inner Casing 12.5.2. Detaching the Control Board 69 CS-E15DD3EW CU-E15DBE / CS-E18DD3EW CU-E18DBE

• Panasonic CU-E18DBE, 8.2. Protection Control Features 8.2.1. Protection Control For All Operations 8.2.1.1. Time Delay Safety Control 1. The compressor will not start for three minutes after stop of operation. 2. This control is not applicable if the power supply is cut off for 20 seconds and on again or after 4-way valve deices condition. 8.2.1.2. 30 Seconds Forced Operation 1. Once the compressor starts operation, it will not stop its operation for 30 seconds. 2. However, it can be stopped using remote control or Auto Switch at indoor unit. 8.2.1.3. Total Running Current

More Instructions:

	Panasonic CU-E18DBE Operating instructions manual 24-12-2022 60	DOWNLOAD
	Panasonic CU-E18DBE Operating instructions manual 08-06-2023 56	DOWNLOAD
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