Panasonic NC-HU301P User manual

Electric Thermo Pot

NC-HU301P

NC-HU401P

Service Manual

ORDER NO. PHAT080502C3

(Revision : Aug. 2010)

Specifications

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.

is a violation of law.

Panasonic

Product Color

Noble Champaign(N), Silver White(SW)

Destination

Thailand, Taiwan, Hong Kong

Singapore, Malaysia, USA/Canada

Vietnam, Russia/Ukrain

Power Supply

Power Consumption

Capacity (approx.)

Weight (approx.)

Thermal regulation Boiling : Relay, Thyristor

Can rotate 360 ° with the power cord

157 ° C

Approx. 1 m

Electric pump

Push switch

3 minutes

1.5W (DC commulator motor)

Electronic lock system (Locked in 10 sec. after switching “Dispense”)

54ml/sec (Constant)

Boiling : Relay, Thyristor

Warming : Thyristor

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

Additional function : Dechlorination, keep warm (98, 90, 80), Energy saving timer 4, 6, 8 and 10 hours),

Overheating protection, Citric acid cleaning.

Power consumption

Rated duration

Dimension (approx.) (W x D x H)

Rated

Taiwan

110V

925W

69W

120V

925W

83W

120V

925W

83W

220V

875W

112W

220V

875W

112W

18Wh

16Wh

3.0L

3.0kg

24.8 x 31.0 x 29.0

4.0L

3.2kg

24.8 x 31.0 x 33.9

10Wh

19Wh

17Wh

15Wh

220V

875W

112W

230V

955W

133W

220V

875W

112W

220V

875W

112W

240V

1040W

122W

110V

925W

69W

NC-HU301P NC-HU401P

USA/CND USA/CNDRUS/UKRSingaporeThailand VietnamHong Kong Taiwan MalaysiaHong Kong

Boiling

Keep Warm

Average power 98 C

consumption during

keep warm

Average power consumption per hour for keep warm status.

(Conditions : Room temperature, water temperature 20 with rated water volume)

(approx.)

90 C

80 C

WARNING

— 2 —

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

WARNING This indicates “the possibility of death or serious injury”.

CAUTION This indicates “the possibility of injury or property loss”.

This symbol indicates caution to be careful.

This symbol indicates compulsory action that must be followed.

1 Cautions for safe repair work

To prevent accidents during repair work, injury or property loss to the users, safety instructions are described

below.

Degree of loss or potential for injury is classified as follows.

Safety instructions are classified with symbols as below and explanations are described as follows.

(Below symbols are examples)

After the repair, replace the original wiring layout.

Otherwise the lead wires may contact any rotating parts or adjacent components causing

failure, electric shock or fire.

Be careful to avoid electric shock. Disconnect power plug while repairing.

Caution for

electric shock

During repair service with power on,

such as for voltage measurement, be

careful to avoid electric shock around

charged battery portion or lead wire ter-

minals.

Disconnect

power plug

Disassemble, assemble and replace

parts after disconnecting the power

source. Failure may cause electric

shock or injury.

Make sure to use specified parts.

Make sure to use specified parts if indicated with the symbol !in circuit diagram or parts list.

WARNING

Wear gloves while disassembling, replacing or assembling.

Make sure to wear gloves while power is on to avoid injury from sharp metal edges or

electric shock during service work.

CAUTION

— 3 —

NC-HU301P, NC-HU401P

2. Part Names and Operation

Filter A set

• It may have come off from the bottom of the

container. Push it completely into the correct

position.

Operation panel

• If the protective film is still covering the surface of the operation

panel, peel it off before using the operation panel.

Lock Knob

Steam vent

Lid

Main unit

Handle

Container

Minimum water

level mark

Liquid crystal

display

Guage Cover

Rotating base (360 degrees)

• When rotating the pot, do not

allow the cord to wind around

the unit.

Water out pipe

cover

Red ball

• Water level indica-

tor cannot be seen

when water level is

above the guage

cover.

Plug complete

Power plug

Cord

Body plug

Diamond fluorine & charcoal Boiling

• The container fine particle of diamond and

ground charcoal are mixed into fluorine is

used. Color, taste and smell of the tea are

conspicuous.

Healthy tea course

• The hot water is alkalified to accelerate the

extraction of tea ingredient such as catechin

— 4 —

NC-HU301P, NC-HU401P

3. Problems Checking

Please follow check operating detail bellow, before start to check

the problems.

3.1. Thermo Pot Performance Test Mode

3.1.1 Boiling and keep warm test

How to operate

1. Pour water into the container. (up to white line)

2. Supply with electric power.

3. Press SELECT pad to set 98 keep warm.

LED symbol for this instruction show as below.

Instructions

1. Long boil/Reboil LED will be lighted and start to boil water.

(LED monitor will display temperature in every 5 degree)

After 14 to 15 minutes, buzzer sounds 4 times, 98 KEEP

WARM LED will be lighted and change to keep warm state.

• If choose Keep Warm at 98, LCD monitor will be changed

to 98 from 100 in approx. 9 min.

• If choose Keep Warm at 98, LCD monitor will be changed

to 98 from 90 in approx. 3 min.

• If choose Keep Warm at 98, LCD monitor will be changed

to 98 from 80 in approx. 3 min.

• Temperature in LCD monitor changes in the sequence of

100 98 90 85.

3. Display of temperature and battery charge sign in LCD

monitor while cordless operation. (Involves approx. 10°C

difference. Below display is the case.)

4. Required time to change to warm keep temperature.

• 98 warm keep : Approx 2.5 to 3.5 min..

• 90 warm keep : Approx.2.5 to 4.5 hours.

• 80 warm keep : Approx. 4.0 to 6.0 hours.

Full of water (3.0L to 4.0L), room temperature 20°C

Lighted Blink

Approx. at 50°C

Approx. at 70°C

Approx. at 95°C

Cordless Dispense

Energy Saving

temp.

Cleaning

Long Boil

Lock

Unlock

Timer

Energy Saving

Timer

Reboil

Long Boil

Reboil

Select

VIP Keep warm

Lock

Unlock

Select

VIP Keep warm

Healthy

Tea

Healthy

Tea

4 Speed

Dispenser

4 Speed

Dispenser

— 5 —

NC-HU301P, NC-HU401P

3.1.2. Reboiling and keep warm test

How to operate

1. Set Keep Warm.

2. Press LONG BOIL/REBOIL bad once or twice.

Operating details

If press LONG BOIL/REBOIL pad once.

Long boil/Reboil LED will be lighted and start to boil water.

LCD monitor will display as picture below.

2. Buzzer sounds 4 times after approx. 1 min. and 98 Keep

Warm will lights on. LCD monitor will display as picture

below.

Operating details

If press LONG BOIL/REBOIL pad twice.

1. Long Boil.Reboil LED will be lighted and start to boil water.

LCD monitor will display as picture below

2. Buzzer sounds 4 times after approx. 7 minutes, and 98

Keep Warm will lights on. LCD monitor will display as

picture below.

Cordless Dispense

Cleaning

Energy Saving

Timer

Long Boil

Reboil

Lock

Unlock

Select

VIP Keep warm

Healthy

Tea

4 Speed

Dispenser

temp.

Cleaning

Energy Saving

Timer

Long Boil

Reboil

Lock

Unlock

Select

VIP Keep warm

Healthy

Tea

4 Speed

Dispenser

temp.

Cordless Dispense

Cleaning

Energy Saving

Timer

Long Boil

Reboil

Lock

Unlock

Select

VIP Keep warm

Healthy

Tea

4 Speed

Dispenser

temp.

Cordless Dispense

Cleaning

Energy Saving

Timer

Long Boil

Reboil

Lock

Unlock

Select

VIP Keep warm

Healthy

Tea

4 Speed

Dispenser

temp.

— 6 —

NC-HU301P, NC-HU401P

3.1.3. Pour out test (Electric pump type)

How to operate

1. Pour hot water into Container.

2. Supply with electric power.

3. Press UNLOCK pad

4. Press Dispenser pad.

Operating details

1. If press UNLOCK pad then Dispenser pad, water will be

poured out from Dispensing Spout.

3.1.4. LCD monitor display test (All lighted)

How to operate

1. Pour water into the container. (In this time, Battery

Charge Sign should be erased. -> Method : Erase battery

charge sign by repeating water pouring.)

2. Press TIMER pad, LONG BOIL.REBOIL pad, all together,

and then supply electric power.

3.1.5. Pour out test (Cordless type)

How to operate

1. Pour hot water into Container

2. Supply with electric power.

3. Supply power until Level 3 battery charge sign will be

displayed

4. Disconnect power cord when Level 3 battery charge sign

is displayed.

5. Press LOCK UNLOCK pad.

6. Press Dispenser pad.

Operating detail

1. If press Dispenser pad, and then Dispenser pad, water

will be poured out from Dispensing Spout.

3.2. Relation of battery charging sing

and possible water pouring

volume (Reference only)

(Common for 3L and 4L types)

LCD display (charging sign)

Possible water pouring volume

(Indicative)

Level 3 2000 to 3000ml (3.0L)

3000 to 3800ml (4.0L)

Level 2 750 to 2000ml (3.0L)

1500 to 2800ml (4.0L)

Level 1 0 to 750ml (3.0L)

0 to 1500ml (4.0L)

Possible continuous pouring volume when changed to

cordless from Warm Keep State.

Operating detail

1. LCD monitor will display as picture below.

- Battery charge sign of 3 levels and temperature displays

will be erased after 10 hours from power cord disconnection

by natural discharging.

- Possible pouring volume will be decreased after long time

use. ( a half after 5 years.)

Cordless Dispense

temp.

Cleaning

Energy Saving

Timer

Long Boil

Reboil

Lock

Unlock

Select

VIP Keep warm

Healthy

Tea

4 Speed

Dispenser

— 7 —

NC-HU301P, NC-HU401P

3.3. Relation of elapsed time and possible water pouring volume (Reference only)

After 1h

3.0L hour

4.25h 7h 9.75hr After 1h 4.25h 7h 9.75hr

4.0 L hour

Possible continuous pouring volume when changed to cordless from Warm Keep State.

— 8 —

NC-HU301P, NC-HU401P

3.4 Check points

3.4.1. Picture is the case of 3.0L

To peg frame

Electric pump

Turn the power on press

the Lock/Unlock key for

unlocking, for unlocking,

press the Pour Out key to

on, and confirm the motor

rotating sound.

Red

White

Blue

Orange

Red

Thermal fuse (Completed)

(Between -: 0Ω)

Boiling heater

(Between - • Orange

Approx.58 Ω)

Keep warm heater

(Between -•

Orange Approx.432 Ω)

Lead wire E

(Completed)

(0 Ω)

Thermistor (Completed)

Approx. 20°C

Approx 45k Ω

Blue

1 3

2 3

123

— 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)

HU301P

White

HU1P(RUS/UKR)

HU301P

Red

HU1P(RUS/UKR)

HU301P

Red

HU1P(RUS/UKR)

HU301P

Red

HU1P(RUS/UKR)

HU301P

Orange

HU1P(RUS/UKR)

HU301P

Blue

HU1P(RUS/UKR)

HU301P

Blue

HU1P(RUS/UKR)

HU301P

Blue

Model

SU221 SU301 SU401 HU301P HU401P HU301P HU401P HU222 HU302 MU402 HU301P HU401P

White White White White White White White Yellow Yellow Yellow

White/Black White/Black

Lead wire B

Series SU1/HU1/MU1 HU1P(HK) HU1P(TWN) HU2/MU2 HU1P(USA)

Model

SU221 SU301 SU401 HU301P HU401P HU301P HU401P HU222 HU302 MU402 HU301P HU401P

Blue Red Black Red Black Red Black Blue White Black

White/Red

White/Black

Lead wire S

Series SU1/HU1/MU1 HU1P(HK) HU1P(TWN) HU2/MU2 HU1P(USA)

Model

SU221 SU301 SU401 HU301P HU401P HU301P HU401P HU222 HU302 MU402 HU301P HU401P

Orange Orange Orange Blue Blue Black Black Blue Blue Blue

White/Red White/Red

Lead wire ass’y D

Lead wire D

Series SU1/HU1/MU1 HU1P(HK) HU1P(TWN) HU2/MU2 HU1P(USA)

Model

SU221 SU301 SU401 HU301P HU401P HU301P HU401P HU222 HU302 MU402 HU301P HU401P

Orange Black White Blue Red Black White Yellow Blue Red

White/Black

White/Blue

Thermistor ass’y

Lead wire M

Series SU1/HU1/MU1 HU1P(HK) HU1P(TWN) HU2/MU2 HU1P(USA)

Model

SU221 SU301 SU401 HU301P HU401P HU301P HU401P HU222 HU302 MU402 HU301P HU401P

Black Red Blue Red Blue Red Blue Black Red Blue

White/Red

White/Blue

Lead wire ass’y H

Lead wire H

Series SU1/HU1/MU1 HU1P(HK) HU1P(TWN) HU2/MU2 HU1P(USA)

Model

SU221 SU301 SU401 HU301P HU401P HU301P HU401P HU222 HU302 MU402 HU301P HU401P

Orange Orange Orange Blue Blue Orange Orange Red Red Red

White/Blue White/Blue

Lead wire J

Series SU1/HU1/MU1 HU1P(HK) HU1P(TWN) HU2/MU2 HU1P(USA)

Model

SU221 SU301 SU401 HU301P HU401P HU301P HU401P HU222 HU302 MU402 HU301P HU401P

Blue Red Black Red Black Red Black Blue Red Black

White/Brown

White/Yellow

Lead wire K

Series SU1/HU1/MU1 HU1P(HK) HU1P(TWN) HU2/MU2 HU1P(USA)

Model

SU221 SU301 SU401 HU301P HU401P HU301P HU401P HU222 HU302 MU402 HU301P HU401P

Yellow Orange Brown Orange Brown Orange Brown Yellow Orange Brown

White/Orange White/Orange

— 10 —

NC-HU301P, NC-HU401P

noitcAdohtemcitsongaiDkcehC

Thermal fuse Comp. Is there connection between the white lead wire on the peg

frame and the CN3 connector of the control unit A? (0Ω)

Replace the Thermal fuse

comp.

Keep warm heater Is there connection between yellow lead wire on heater

terminal and blue and orange led wires? (Approx.133Ω)

Replace the Container comp.

Power cord Is there connection in the power cord? (0Ω) Replace the Power cord.

Lead wire assy. E Is there connection in the lead wire assy. E? (0Ω) Replace the Lead wire assy. E.

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ehW

comp. (operation)

BtinulortnoCehtecalpeR.lamronerastrapevobaehtnehW

comp. (bottom)

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Boiling heater Is there connection between yellow lead wire and blue •

orange lead wire? (11Ω)

Replace the Container comp.

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comp. (operation)

BtinulortnoCehtecalpeR.lamronerastrap

evobaehtnehW

comp. (bottom)

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Is the filter (located at the bottom of the container) clogged? Clean up or replace the filter.

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ehtsserpdnaretawylppuS?e

disniretawerehtsI

Long Boil/Reboil pad.

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Themistor assy. comp. Is there connection between blue lead wire and blue lead

wire? (Approx. 45Ωwhen approx. 20°C)

Replace the Thermistor assy.

comp.

BtinulortnoCehtecalpeR.lamronerastrape

vobaehtnehW

comp. (bottom)

AtinulortnoCehtecalpeR.lamronerastrapevobaehtnehW

comp. (operation)

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.

3.5.2. Water is not boiled. (Water pours out)

The items in the Check correspond to those shown in Check Point on P.9.

3.5.3 Hot water cannot poured out or water flow is obstructed. (Water is boiled)

Check point

The items in the Check correspond to those shown in Check Point on P.9.

3.5.4. Long Boil/Reboil LED and 98 keep warm LED are lighted up alternately.

(Overheating protection mode/Bottom thermistor disconnection mode)

Check point

The items in the Check correspond to those shown in Check Point on P.9.

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Electric pump Turn the 100V power on, and pres the Lock/Unlock pad rst

and then the Pour Out pad. Is the motor heard running?

Replace the electric pump.

Lead wire assy. E comp. Is there connection in the Lead wire assy. E? (0Ω) Replace the Lead wire assy. E.

AtinulortnoCehtecalpeR.lamronerastrapevobaehtnehW

(operation).

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(bottom).

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