Panasonic NC-PH22WTW / NC-PH30WTW Service Manual ▷ View online
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3.4.5 Select pad does not work.
Replace the Control unit B (operation).
Replace the Control unit A (bottom).
Action
Diagnostics Method
Check
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3.4.6 Hot water cannot be poured out smoothly. (Immediately after being furious)
Boiling is too noisy. Container is dirty by dregs.
Boiling is too noisy. Container is dirty by dregs.
Clean the container with citric acid.
Action
Diagnostics Method
Check
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3.4.7 Hot water cannot be poured out, hard to pour out. (Air pump method)
Replace broken part.
Action
Diagnostics Method
Check
Is Packing A, Seal Packing B, Lid Comp. broken?
Rubber packing set
Pump comp.
Replace Pump comp.
Does Supporting plate pad rebound after pushing?
NC-PH22, NC-PH30
3.5 Operating and LCD monitor display example
Status of each lamp when boiling cool water.
1. During the boiling operation of ordinary water, the 208F/98C LED will be blink and Long boil/Reboil
will be lighted. After detection of boiling, the 208F/98C LED changes to continuous lighting and
Long boil/Reboil LED will be extinguishes.
2. When pure ordinary water in and set 140F/60C keep warm by pressing the “Select” pad, the 140F/60C
LED will be blink and Long boil/Reboil will be lighted. After detection of boiling, the 140F/60C LED
changes to continuous lighting and Long boil/Reboil LED will be extinguishes.
will be lighted. After detection of boiling, the 208F/98C LED changes to continuous lighting and
Long boil/Reboil LED will be extinguishes.
2. When pure ordinary water in and set 140F/60C keep warm by pressing the “Select” pad, the 140F/60C
LED will be blink and Long boil/Reboil will be lighted. After detection of boiling, the 140F/60C LED
changes to continuous lighting and Long boil/Reboil LED will be extinguishes.
Status of each lamp when the 208F/98C keep warm is switched to the 140F/60C
keep warm by pressing the “Select” pad.
keep warm by pressing the “Select” pad.
1. When the 140F/60C keep warm is set by pressing the “Select” pad, 140F/60C will be blink. When the
water temperature reaches 140°F or 60°C changes to continuous lighting.
water temperature reaches 140°F or 60°C changes to continuous lighting.
Status of each lamp when setting the Long boil.
1. To set the Long boil for cool water, press the “Long boil/Reboil” pad once. Then both the 208F/98C
LED and the Long boil/Reboil LED start blink.
2. To set the Long boil during either the 208F/98C keep warm or 140F/60C keep warm by press
“Long boil/Reboil” pad twice. Then both the 208F/98C LED and Long boil/Reboil LED start blink.
Upon completion of the Long boil, the Long bol/Reboil LED extinguishes and the 208F/98C changes to
continuous lighting (if set Long boil during 208F/98C keep warm). Or then both the 140F/60C LED and
Longboil/Reboil LED start blink. Upon completion of the Long boil, the Long boil/Reboil LED
extinguishes and the 140F/60C changes to continuous lighting.
(if set Long boil during 140F/60C keep warm).
LED and the Long boil/Reboil LED start blink.
2. To set the Long boil during either the 208F/98C keep warm or 140F/60C keep warm by press
“Long boil/Reboil” pad twice. Then both the 208F/98C LED and Long boil/Reboil LED start blink.
Upon completion of the Long boil, the Long bol/Reboil LED extinguishes and the 208F/98C changes to
continuous lighting (if set Long boil during 208F/98C keep warm). Or then both the 140F/60C LED and
Longboil/Reboil LED start blink. Upon completion of the Long boil, the Long boil/Reboil LED
extinguishes and the 140F/60C changes to continuous lighting.
(if set Long boil during 140F/60C keep warm).
Status of each lamp when setting cleaning mode.
1. To set cleaning mode by pressing “Select” 3 seconds, then both 208F/98C LED and Long boil/Reboil
LED start lighted. Upon completion of the cleaning, the 208F/98C LED changes to blink and Long boil/
Reboil LED extinguishes. When the water temperature reaches 208°F or 90°C, the 208F/98C changes
to continuous lighting.
LED start lighted. Upon completion of the cleaning, the 208F/98C LED changes to blink and Long boil/
Reboil LED extinguishes. When the water temperature reaches 208°F or 90°C, the 208F/98C changes
to continuous lighting.
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4. DISASSEMBLY AND REASSEMBLY INSTRUCTIONS
4.1 Bottom plate and Body
4.2 Board holder A comp.
(Lower part)
(Lower part)
1. Remove 2 tapping screws and 1 truss 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.
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.
FIG. 2
FIG. 1
1. Remove 3 waterproof claws and then open
waterproof.
2. Remove all, connector, fasten terminal
and lead wire assy E which wiring on
board holder A comp. (lower part).
waterproof.
2. Remove all, connector, fasten terminal
and lead wire assy E which wiring on
board holder A comp. (lower part).
Operating point
Fasten terminal which has stopper, should to
push arrow-point part and pull off together.
push arrow-point part and pull off together.
Tapping screw
(M4 x 12)
Truss head screw
Bottom plate
Sleeve
Screw A
Waterproof
cover B
cover B
Body
Waterproof
cover B
cover B
Board holder A
comp. (Bottom)
comp. (Bottom)
Lead wire assy E
(Pull to disconnect)
(Pull to disconnect)
Do not do maintennance and re-use if copper
pattern on PCB is broken.
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
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.
Note
CAUTION
NC-PH22, NC-PH30
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1. Remove 1 screw off.
2. Remove bushing from water pipe packing A
and container comp.
3. Remove feed water pipe from communicating
bushing.
2. Remove bushing from water pipe packing A
and container comp.
3. Remove feed water pipe from communicating
bushing.
4.3 Feed water pipe
1. Remove 2 screws of cover plate.
2. Remove white, orange and yellow lead wire
of heater terminal.
3. Remove cover plate from container.
4. Remove thermal fuse comp. from cover
plate.
5. Remove hold spring A from cover plate.
6. Rotate thermistor assy. 90
2. Remove white, orange and yellow lead wire
of heater terminal.
3. Remove cover plate from container.
4. Remove thermal fuse comp. from cover
plate.
5. Remove hold spring A from cover plate.
6. Rotate thermistor assy. 90
° to remove it.
4.4 Thermal fuse comp. and
Thermistor comp.
Thermistor comp.
Tapping screw
(M4 x 8)
(M4 x 8)
Feed water pipe
Communicating
bushing
bushing
Water pipe
packing A
packing A
Tapping screw (M4 x 8)
Thermistor
assy.
assy.
Hold spring A
Thermal fuse
comp.
comp.
Container
comp.
comp.
Cover plate
Heater
terminal
terminal
Water pipe
comp.
comp.
Container
comp.
comp.
FIG. 4
FIG. 3
Operating point
Careful thermistor leans when assemble with
cover plate.
cover plate.
Do not forget to put compound.
Remove white, orange and yellow lead wires
with wrench.
with wrench.
NC-PH22, NC-PH30
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4.5 Case A comp.
1. Remove water pipe comp., and then remove
case A comp.
2. Pull off ball A from case A comp.
case A comp.
2. Pull off ball A from case A comp.
FIG. 5
Water pipe
comp.
comp.
Case A comp.
Ball A
Lead wire assy E
NC-PH22, NC-PH30
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