Panasonic NC-HU301P Service Manual
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Panasonic NC-HU301P Service Manual

Electric thermo pot
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Service Manual

Specifications

Power Supply
Power Consumption
Rated
(approx.)
Boiling
Keep Warm
Average power
consumption during
keep warm
Capacity (approx.)
Dimension (approx.) (W x D x H)
Weight (approx.)
Thermal regulation
Rotating base
Thermal fuse
Power cord
Hot water supply device specifications
Hot water supply method
Current volume adjustment range
Operation method
Pump-lock
Hot water pump
Power consumption
Rated duration
Additional function : Dechlorination, keep warm (98, 90, 80), Energy saving timer 4, 6, 8 and 10 hours),
Overheating protection, Citric acid cleaning.
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.
Panasonic
Taiwan
Hong Kong
Thailand
110V
220V
220V
925W
875W
875W
69W
112W
112W
°
98 C
°
90 C
°
80 C
Average power consumption per hour for keep warm status.
(Conditions : Room temperature, water temperature 20
Boiling : Relay, Thyristor
Warming : Thyristor
Electronic lock system (Locked in 10 sec. after switching "Dispense")
WARNING
ORDER NO. PHAT080502C3
Electric Thermo Pot
Noble Champaign(N), Silver White(SW)
NC-HU301P
Vietnam
Singapore
USA/CND
220V
230V
120V
875W
955W
925W
112W
133W
83W
18Wh
16Wh
10Wh
°
C
with rated water volume)
3.0L
24.8 x 31.0 x 29.0
3.0kg
Can rotate 360 ° with the power cord
157
° C
Approx. 1 m
Electric pump
54ml/sec (Constant)
Push switch
1.5W (DC commulator motor)
3 minutes
© Panasonic Home Appliances (Thailand) Co., Ltd. 2008.
All rights reserved. Unauthorized copying and distribution
is a violation of law.
(Revision : Aug. 2010)
NC-HU301P
NC-HU401P
Product Color
Destination
Thailand, Taiwan, Hong Kong
Singapore, Malaysia, USA/Canada
Vietnam, Russia/Ukrain
NC-HU401P
RUS/UKR
Taiwan
Hong Kong
USA/CND
220V
110V
220V
875W
925W
875W
112W
69W
112W
19Wh
17Wh
15Wh
4.0L
24.8 x 31.0 x 33.9
3.2kg
Boiling : Relay, Thyristor
Malaysia
120V
240V
925W
1040W
83W
122W

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Summary of Contents for Panasonic NC-HU301P

  • Page 1: Specifications

    Panasonic © Panasonic Home Appliances (Thailand) Co., Ltd. 2008. All rights reserved. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    NC-HU301P, NC-HU401P Contents Page 1. Specifications...............................1 2. Cautions for safe repair work ..........................2 3. Part Names and Operation ..........................3 4. Reassembling and Assembling Procedure ......................20 5. Wiring diagram ..............................33 6. Parts location and parts list ..........................36 1 Cautions for safe repair work To prevent accidents during repair work, injury or property loss to the users, safety instructions are described below.

  • Page 3: Part Names And Operation

    NC-HU301P, NC-HU401P 2. Part Names and Operation Operation panel • If the protective film is still covering the surface of the operation panel, peel it off before using the operation panel. Steam vent Lock Knob Liquid crystal display Handle Main unit...
  • Page 4 NC-HU301P, NC-HU401P 3. Problems Checking LED symbol for this instruction show as below. Lighted Blink Please follow check operating detail bellow, before start to check the problems. 3.1. Thermo Pot Performance Test Mode Instructions 1. Long boil/Reboil LED will be lighted and start to boil water.
  • Page 5 NC-HU301P, NC-HU401P 3.1.2. Reboiling and keep warm test Operating details If press LONG BOIL/REBOIL pad once. How to operate 1. Long boil/Reboil LED will be lighted and start to boil water. 1. Set Keep Warm. LCD monitor will display as picture below.
  • Page 6 NC-HU301P, NC-HU401P 3.1.3. Pour out test (Electric pump type) How to operate Operating detail 1. Pour hot water into Container. 1. LCD monitor will display as picture below. 2. Supply with electric power. 3. Press UNLOCK pad 4. Press Dispenser pad.
  • Page 7 NC-HU301P, NC-HU401P 3.3. Relation of elapsed time and possible water pouring volume (Reference only) 4.0 L hour 3.0L hour 9.75hr 9.75hr After 4.25h After 1h 4.25h Possible continuous pouring volume when changed to cordless from Warm Keep State. — 7 —...
  • Page 8 NC-HU301P, NC-HU401P 3.4 Check points 3.4.1. Picture is the case of 3.0L To peg frame Blue Blue White Orange Boiling heater (Between • Orange Approx.58 Ω) Keep warm heater • (Between Orange Approx.432 Ω) Electric pump Turn the power on press...
  • Page 9 NC-HU301P, NC-HU401P 3.4.2. List of lead wire color HU all series Thermal fuse comp. Lead wire A Series SU1/HU1/MU1 HU1P(HK) HU1P(TWN) HU2/MU2 HU1P(USA) HU1P(RUS/UKR) Model SU221 SU301 SU401 HU301P HU401P HU301P HU401P HU222 HU302 MU402 HU301P HU401P HU301P White White...
  • Page 10 NC-HU301P, NC-HU401P 3.5. Failure Diagnostics Chart 3.5.1. No power (No indication, no pouring) The items in the Check correspond to those shown in Check Point on P.9. c i t Thermal fuse Comp. Is there connection between the white lead wire on the peg Replace the Thermal fuse frame and the CN3 connector of the control unit A? (0Ω)
  • Page 11 NC-HU301P, NC-HU401P 3.5.5. Long Boil/Reboil LED and 98 keep warm LED are lighted up alternately. (LCD display : H1) The items in the Check correspond to those shown in Check Point on P.9. c i t Themistor assy. comp. LCD display : H1 : Disconnection of Thermistor comp.) Replace Thermistor assy.
  • Page 12 NC-HU301P, NC-HU401P 3.6. Operating and LCD Monitor Display Example 3.6.1. Boiling (If select keep warm at 98) Power ON (Boiling) Press Select pad to 98 Boiling detection after 2 minutes (Long Boil/Reboil LED:Lighted) (Long Boil/Reboiling & Reboil LED : Off) Detection of boiling.
  • Page 13 NC-HU301P, NC-HU401P 3.6.3. Boiling (IF specify Long Boil) Power ON (Boiling) Boiling detection after 2 minutes (Long Boil/Reboil LED : Lighted) (Long Boil/Reboil LED : Blink) (Long Boil/Reboil LED : OFF) Press Long Boil/Reboil Extend boiling approx. pad 1 time 6 minutes Detection of boiling.
  • Page 14 NC-HU301P, NC-HU401P 3.6.5. Keep warm (When want to reboil from 90 Keep warm) Boiling detection after 2 minutes (Long Boil/Reboil LED : Blink) (Long Boil/Reboil LED : OFF) Press Long Boil/Reboil Extend boiling approx. pad 2 times 6 minutes Boiling detection after 2.5 to 5 minutes...
  • Page 15 NC-HU301P, NC-HU401P 3.6.8. Timer Mode (If 90 Keep warm) Boiling mode (Heater turns off, no boiling) (Long Boil/Reboiling LED : Lighted) Power ON Boiling mode (Long Boil/Reboiling LED : OFF) Displayed by the hour. Press Timer pad 4 times. Remaining hour : 0 2 minutes after detection of boiling.
  • Page 16 NC-HU301P, NC-HU401P 3.6.10. If Automatic keep warm (If 98 Keep warm) (Long Boil/Reboiling LED : OFF) (Long Boil/Reboiling LED : OFF) (Long Boil/Reboiling LED : OFF) Unused hours Come at set temperature (No boiling) If temperature setting of 90 or 80, it switches to Keep warm when reaches at 90 or 80 simultaneously without boiling.
  • Page 17 NC-HU301P, NC-HU401P 3.7. About “Automatic saving” function • This unit remembers the daily use pattern, the hours this unit is used or not, after the power is supplied at first. Refer to P.18 for the storage of the use pattern, the hours this unit is used or not.
  • Page 18 NC-HU301P, NC-HU401P 3.7.3. Cancel of “Automatic Saving” If “Timer” pad is pressed 5 times, following will be performed. “Automatic” is displayed on LCD, and performs either mode of “Unused hours” or “Used hours”. Operation : (Long Boil/Reboiling LED : OFF) Press “Automatic Saving/Timer”...
  • Page 19 NC-HU301P, NC-HU401P NC-HU301P, NC-HU401P — 19 —...

  • Page 20: Reassembling And Assembling Procedure

    NC-HU301P, NC-HU401P 4. Reassembling and Assembling Procedure Caution [Below figure shows the case] Attention, Be careful for injuries by the Please assemble in the reverse sequence referring to end face of metal portions Assembling points. while reassembling, 4.1. Bottom plate and Plug connector replacement and assembling.
  • Page 21 NC-HU301P, NC-HU401P 4.2. Body 1. Refasten binding band (Refer to Fig-2) 2. Remove each lead wire hook to the body while removing the body. 3. Remove the body upward. (Refer to Fig-3) Binding band Fig-2 Body Fig-3 — 21 —...
  • Page 22 NC-HU301P, NC-HU401P 4.3. Control Unit A comp. (Peg flame) 3.5x12 bind tapping screw Caution When touching the control unit, or may touch it, ground the human body, clothes, working table etc. with several mage ohm resister, and release the charged static Connect electricity.
  • Page 23 NC-HU301P, NC-HU401P 4.4. Electric pump, Bottom insulator B 1. Remove a screw fixing electric pump. 2. Pull out the water pipe packing A comp. from electric Bottom insulator B Electric pump 4x8 pan head pump. Del Tite screw 3. Remove electric pump.
  • Page 24 NC-HU301P, NC-HU401P 4.6. Control unit B comp. (Display portion) 1. Disassemble Casing A comp. 2. Take off 2 screws (Refer Fig-10) 3. Disassemble Holder B. (Lift up) 4. Remove Name C. 5. Disconnect lead wire E comp. CN12. 6. Open the hooks of Holder B, and remove Control unit B comp.
  • Page 25 NC-HU301P, NC-HU401P 4.7. Insulation panel A comp. Point when working 1. Remove Heat shield material A comp. from Container comp. (Directly remove upward while thermistor comp., • Be careful not to scratch Heat shield material A comp. thermal fuse comp. and lead wire D comp. are attached.) (Vacuum state cannot be maintained.)
  • Page 26 NC-HU301P, NC-HU401P 4.9. Upper trame Point when assembling 1. Remove cover 2. Remove water out pipe cover • Set the dowel of Container comp. between 2 long ribs 3. Remove Container gasket (hinged side) of Dispensing spout comp. and assemble it.

  • Page 27: Front Panel

    NC-HU301P, NC-HU401P 4.11. Front panel 1. Take out 2 screws. 2. Turn over the body. 3. Release the 2 hooks by pushing with needle-nose plier. Points when working • Wear gloves when disassemble the front panel. (to avoid dirt and for safety.)
  • Page 28 NC-HU301P, NC-HU401P 4.12. Dispensing spout cover Points when assembling 1. Press both sides of Dispensing spout cover slightly and remove from front panel • Set convex A on dispensing spout cover into square hole B. Dispensing spout cover Front panel...
  • Page 29 NC-HU301P, NC-HU401P 4.14. Lid comp and inner lid 1. Remove the 3 screws. 2. Remove the Inner lid. 4 × 10 Tapping Screws (Stainless) Inner lid Seal packing B Lid (Comp) Disassembly-20 4.15. Lid A and lid cover comp. 1. Remove the 4 screws.
  • Page 30 NC-HU301P, NC-HU401P 4.16. Locking spring A 1. Remove Locking spring with longnose plier Lock spring B Fig-20 4.17. Lock knob B, Lock spring B 4.18. Insulation panel B 1. Remove Lock knob B pressing toward arrow direction. 1. Pick up Insulation panel B.
  • Page 31 NC-HU301P, NC-HU401P 4.19. Check after assembly After assembly, check for any water leaks, insulation resistance, dielectric strength, and performance, with power applied. The insulation resistance: Shall be 2MΩ or more when measured with a 500 VDC megger. (Measuring point: Between the 2...
  • Page 32 NC-HU301P, NC-HU401P 4.21. Overall Performance Test Caution Be careful for scald by hot water while testing 4.21.1. Temperature test while Keep warm (98 Keep warm setting) 1. Pour rated volume of water into container and boil it. (Check it is boiled.) 2.

  • Page 33: Wiring Diagram

    NC-HU301P, NC-HU401P 5. Wiring diagram 5.1. Connection diagram Control unit A comp. Control unit B comp. (bottom) (operation) Thermistor assy. Peg frame Container comp. Keep warm Heater :112W Main Heater : 833W Thermal fuse comp. Electric pump Country Main Heater...
  • Page 34 NC-HU301P, NC-HU401P 5.2. Actual Wiring Diagram (in case of 3.0L) Caution Return to original wiring after repair. Lead wires touch to the surface of parts, and may cause fault or power shock. Boiling Heater (832.6-910W) Lead Wire Assy D Ceramic Terminal...
  • Page 35 NC-HU301P, NC-HU401P 5.3. Actual Wiring Diagram (in case of 4.0L) Caution Return to original wiring after repair. Lead wires touch to the surface of parts, and may cause fault or power shock. Boiling Heater (990.9W) Lead Wire Assy D Ceramic Terminal...

  • Page 36: Parts Location And Parts List

    NC-HU301P, NC-HU401P 6. Parts Location and Parts List 6.1. Development 10.1 25 26 — 36 —...
  • Page 37 NC-HU301P, NC-HU401P 6.2. REPLACEMENT PARTS LIST Important safety notice : Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacturer’s specified part. Part List REF. PART NAME PART NO. SAFETY HU301P HU401P TAIWAN HONG KONG THAILAND VIETNAM SINGAPORE USA/CSD Malaysia RUS/UKR ...
  • Page 38 NC-HU301P, NC-HU401P REF. PART NAME PART NO. SAFETY HU301P HU401P TAIWAN HONG KONG THAILAND VIETNAM SINGAPORE USA/CSD Malaysia RUS/UKR  THERMAL FUSE COMP. APS01B62810U  APS01H62810U  APS01A62820U  APS01B62910U  APS01H62910U  APS01M62910U  APS01A62920U  LEAD WIRE ASS’Y D APN09B628-0U ...
  • Page 39 NC-HU301P, NC-HU401P REF. PART NAME PART NO. SAFETY HU301P HU401P TAIWAN HONG KONG THAILAND VIETNAM SINGAPORE USA/CSD Malaysia RUS/UKR  APY01B628-S0 GUAGE COVER  APY01H628-S0  APY01H628-N2  APY01K628-S4  APY01B629-S0  APY01H629-S0  APY01H629-N2   BOTTOM RING APB87-360-H0 ...
  • Page 40 NC-HU301P, NC-HU401P 6.3. Packing Instruction Manual Power Activated Carbon Case Set Cord Pad B Protection Bag Pad A Pad C Inner Box — 40 —...
  • Page 41 NC-HU301P, NC-HU401P Detail Change Notice REVISION ITEM NO. PAGE DETAIL REMARK Jun. 2010 Add Picture No. 50 Add Activated Carbon Case Set Add Part Name, Part No. and Q’ty Revise Part Name of Active Charcoal Filter Aug. 2010 Revise Specifications...

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