Read Panasonic NC-PH30ZTW (serv.man2) Service Manual online
7
3.4.
Failure diagnostics chart
3.4.1.
No power. (There is no power indication)
• The items in the Check correspond to those shown in Check Point on 3.3.Check points.
3.4.2.
Water is not boiling. (Water comes out)
• The items in the Check correspond to those shown in Check Point on 3.3.Check points.
3.4.3.
Hot water cannot poured out or water flow is obstructed. (Water is boiled)
• Check point
3.4.4.
Long Boil/Reboil LED and 208F/98C LED are lighted up alternately. (Overheating
protection mode / Bottom thermistor disconnection mode)
protection mode / Bottom thermistor disconnection mode)
• Check point
•
The items in the Check correspond to those shown in Check Point on
3.3.Check points
.
3.4.5.
Select pad does not work.
3.4.6.
Hot water cannot be poured out smoothly. (Immediately after being furious) Boiling
is too noisy. Container is dirty by dregs.
is too noisy. Container is dirty by dregs.
Check
Diagnostics Method
Action
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
peg frame and the CN3 connector of the control unit A?
(0
)
Replace the Thermal fuse comp.
Keep warm heater
Is there connection across the keep warm heater?
(approx. 430
(approx. 430
) (between the brown and the yellow
portions)
Replace the Container comp.
Power cord
Is there connection in the power cord? (0
)
Replace the Power cord.
Lead wire assy E
Is there connection in the lead wire assy E? (0
)
Replace the Lead wire assy E.
When the above parts are normal
Replace the Control unit A (bottom).
When the above parts are normal
Replace the Control unit B (operation).
Check
Diagnostics Method
Action
Boiling heater
Is there connection across the boiling heater? (approx.
70
70
) (between the blue and the white portions)
Replace the Container comp.
When the above parts are normal
Replace the Control unit A (bottom).
Diagnostics Method
Action
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.
pump and obstruct the hot water from pouring out smoothly for a little
while.
Open the lid once and close it again before pouring out the hot water.
Diagnostics Method
Action
Is there water inside?
Supply water and press the Long Boil/Reboil pad.
Check
Diagnostics Method
Action
Thermistor
assy.
Is there connection across the Thermistor assy?
(approx. 20°C : approx. 45K
(approx. 20°C : approx. 45K
) (between the orange
and the orange portions)
Replace the Thermistor assy.
Lead wire assy E
Is there connection in the lead wire assy E? (0
)
Replace Lead wire assy E.
When the above parts are normal
Replace the Control unit B (operation).
When the above parts are normal
Replace the Control unit A (bottom).
Check
Diagnostics Method
Action
-
-
Replace the Control unit B (operation).
-
-
Replace the Control unit A (bottom).
Check
Diagnostics Method
Action
-
-
Clean the container with citric acid.
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