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- 5 -

Please follow check operating detail below, before
start to check the problems.

1. Pour approx. 1000 ml water into the container.
2. Supply with 220V electric power.

220V

1. Long boil/Reboil LED will be lighted and 
    208F/98C LED will be blink and start to boil
    water.

2. After approx. 9~10 min. 208F/98C LED will be
    lighted and change to keep warm state.

Water supply mark

Approx. 1000 ml.

4

4

NC-PH22, NC-PH30

- 6 -

1. Set Keep warm to 98.
2. Press “Long Boil/Reboil” pad once or twice
    to keep warm.

1. Long Boil/Reboil LED will be lighted and
    208F/98C LED will be blink and start to boil
    water.

2. 208F/98C LED will be lighted in approx. 2 min.,
    later.

If press “Long Boil/Reboil” pad once.

1. Long Boil/Reboil LED and 208F/98C LED will
    be blink and start to boil water.

2. After approx. 7 min., 208F/98C LED will be
    lighted.

If press “Long Boil/Reboil” pad twice to

eliminate chlorine.

Press this pad

NC-PH22, NC-PH30

4

4

4

4

4

- 7 -

1. Remove 2 tapping screws and 1 truss head
    screw from bottom plate.
2. Remove 1 screw and sleeve from body.
3. Remove white, orange lead wire and earth
    wire from peg frame.
4. Remove body off.
5. Remove waterproof cover B.

Tapping screw

(M4 x 12)

Truss head screw

Bottom plate

Sleeve

Screw A

Waterproof
cover B

Body

Do not do maintennance and re-use if copper
pattern on PCB is broken.

Microcomputer in thermo pot, may break
down by static electricity from clothes,
human body, workbenches, etc., when
touch or wonder to touch should to
ground humnan body with several M

Ω.

 

NC-PH22, NC-PH30

Check point-1

4

Boiling heater

(Approx. 70

Ω)

Thermistor (complete)

Approx. 20˚C

Approx. 45kΩ

Lead wire assy E

(0

Ω)

Keep warm heater 

(Approx. 430

Ω)

Thermal fuse comp.

(0

Ω)

- 8 -

Replace the Container comp.

Is there connection across the keep warm heater?
(approx. 430

Ω) (between the brown and the yellow

portions)

Keep warm heater

Replace the Control unit A (bottom).

Is there connection in the lead wire assy E? (0

Ω)

When the above parts are normal

Replace the Control unit B (operation).

When the above parts are normal

Replace the Lead wire assy E.

Lead wire assy E

Replace the Power cord.

Is there connection in the power cord? (0

Ω)

Power cord

Replace the Thermal fuse comp.

Is there connection between the blue lead wire on
the peg frame and the CN3 connector of the control 
unit  A? (0

Ω)

Thermal fuse comp.

The items in the Check correspond to those shown in Check Point on P. 7.

Replace the Container comp.

Is there connection across the boiling heater?
(approx. 70

Ω) (between the blue and the white

portions)

Boiling heater

Replace the Control unit A (bottom).

When the above parts are normal

The items in the Check correspond to those shown in Check Point on P. 7.

NC-PH22, NC-PH30

Supply water and press the Long Boil/Reboil pad.

Is there water inside?

Check point

The items in the Check correspond to those shown in Check Point on P. 7.

Replace the Control unit B (operation).

Replace the Thermistor assy.

Is there connection across the Thermistor assy?
(approx. 20˚C : approx. 45K

Ω)

(between the orange and the orange portions)

Thermistor assy.

Replace Lead wire assy E.

Is there connection in the lead wire assy E? (0

Ω)

Lead wire assy E

Replace the Control unit A (bottom).

When the above parts are normal

When the above parts are normal

Open the lid once and close it again before pouring
out the hot water.

After the water has been boiled, the boiling bubbles may enter the
pump and obstruct the hot water from pouring out smoothly for a
little while.

Check point