Panasonic NC-EG4000WTS / NC-EG3000WTS Simplified Service Manual ▷ View online
13
5.4.
Check Point
14
5.5.
Failure diagnostics chart
5.5.1.
No power. (No indication, No pouring)
The items in the Check correspond to those shown in Check Point (
5.4.Check Point).
5.5.2.
Water is not boiled. (Water pours out)
The items in the Check correspond to those shown in Check Point (
5.4.Check Point).
5.5.3.
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 (
5.4.Check Point).
5.5.4.
Long Boil / Reboil LED and VIP keep warm LED are lighted up alternately.
Check point
The items in the Check correspond to those shown in Check Point (
5.4.Check Point).
5.5.5.
Select pad doesn’t work.
Check
Diagnostic Method
Action
Thermal fuse (Comp.)
Is there connection in thermal fuse?
Replace the Thermal fuse comp.
Keep warm heater
Is there connection in keep warm heater? (Approx.452ohms)
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.
When the above parts are normal
Replace the Control unit A comp.
(Operation)
Replace the Control unit B comp.
(Bottom)
(Operation)
Replace the Control unit B comp.
(Bottom)
Check
Diagnostic Method
Action
Boiling heater
Is there connection in boil heater? (Approx.57ohms)
Replace the Container comp.
When the above parts are normal
Replace the Control unit A comp.
(Operation)
Replace the Control unit B comp.
(Bottom)
(Operation)
Replace the Control unit B comp.
(Bottom)
Check
Action
Is the filter (located at the bottom of the container) clogged?
Clean up or replace the filter.
Check
Diagnostic Method
Action
Electric pump
I turn ON. And press the “Lock/Unlock” button first and then the “
“4Speed Dis-
penser” button
. Is the motor heard running?
Replace the Electric pump.
Lead wire assy. E
Is there connection in the lead wire assy. E? (0Ω)
Replace the Lead wire assy E.
When the above parts are normal
Replace the Control unit A comp.
(Operation)
Replace the Control unit B comp.
(Bottom)
(Operation)
Replace the Control unit B comp.
(Bottom)
Check
Action
Is there water inside?
Supply water and press
the“Long Boil / Reboil”button.
the“Long Boil / Reboil”button.
Check
Diagnostic Method
Action
Thermistor assy. comp.
Is there connection in thermistor assy? (Approx.20deg.Approx.45ohms)
Replace the Thermistor assy.
comp.
comp.
When the above parts are normal
Replace the Control unit A comp.
(Operation)
Replace the Control unit B comp.
(Bottom)
(Operation)
Replace the Control unit B comp.
(Bottom)
Check
Diagnostic Method
Action
-
-
Replace the Control unit B comp.
(Bottom)
(Bottom)
15
5.5.6.
Lock/Unlock pad doesn’t work.
The items in the Check correspond to those shown in Check Point (
5.4.Check Point).
5.5.7.
Hot water cannot be poured out smoothly. Noise is getting big while operating and noisy.
The Container is dirty with water stain.
The Container is dirty with water stain.
Check
Diagnostic Method
Action
Lead wire assy. E
Is there connection in the lead wire assy. E? (0Ω)
Replace the Lead wire assy E.
When the above parts are normal
Replace the Control unit A comp.
(Operation)
Replace the Control unit B comp.
(Bottom)
(Operation)
Replace the Control unit B comp.
(Bottom)
Check
Diagnostic Method
Action
-
-
Wash with citric acid.
-
-
Replace the Control unit A comp.
(Operation)
Replace the Control unit B comp.
(Bottom)
(Operation)
Replace the Control unit B comp.
(Bottom)
16
6 Disassembly and Assembly Instructions
Note :
• Reassemble in the reverse order of disassembly referring to
“Points on Reassembly”
6.1.
Bottom plate and Body
1. Remove 2 Tapping screws and 1 Truss screw from Bot-
tom plate.
2. Remove 1 screw and Sleeve from Body.
3. Remove 2 Lead wire and Earth wire from Peg frame.
4. Remove Body off.
5. Remove Waterproof cover B.
3. Remove 2 Lead wire and Earth wire from Peg frame.
4. Remove Body off.
5. Remove Waterproof cover B.
6.2.
Control unit A at bottom
1. Remove 3 claws holding waterproof cover B and remove
it.
2. Remove all the connectors, fastener terminals and lead
wire E comp. at the bottom of Control unit A.
3. Remove the non-flammable tube.
Service points
• Remove the fastener terminal stoppers by pulling them while
pressing the part indicated by arrows.
Points for reassembly
• When inserting the lead wire E comp. into control unit A at
bottom, insert it toward the direction shown on the previous
figure.
figure.
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