Panasonic NE2157R - Manual

Panasonic

Number: E10-2010-08

Technical Bulletin

Date: September, 2010

Panasonic Home and Health Company

Home Appliance Group / Food service

Product: Commercial Mircowave Oven

Model:

NE1258R NE1257R NE1757R

NE2157R

Subject: Pro 1 Error Codes

NOTE: If the unit is either dead or displays any of the error codes listed below, check the parts listed in
possible cause column depending on failure indication e.g. F81, F82 in the display or no display (dead).

* Please see back of this page on how to troubleshoot F81/F82 error code or dead unit

DISPLAY

CONDITION

POSSIBLE CAUSE (In or de r of pr obability)

F33

Open temperature s ens or (ex haus t)

1. Loos e ground s c rew on the digital programmer c irc uit
2. Loos e c onnec tor CN4
3. Open temperature s ens or (Should read 25k to 85k)
4. Digital programmer c irc uit f ailure

F34

Short temperature s ens or (ex haus t) (Rare)

1. Digital programmer c irc uit f ailure
2. Temperature s ens or f ailure

F44

1. Shorted membrane s w itc h

F01

Ex haus t temperature ex c eeds 120° C

1. Burning f ood in the ov en due to ov erc ooking

F05

Memory f ailure

1. Digital programmer c irc uit f ailure

No Dis play * (Dead)

No v oltage s upply to the LV trans f omer

1. Right f us e open
2. Damaged s hort s w itc h
3. Shorted H.V c apac itor, trans f ormer, diode or magnetron (upper)
4. Shorted L.V trans f ormer (Relay board)
5. Digital programmer c irc uit f ailure

F81*

Ex c es s iv e c urrent c oms umption

(upper H.V c irc uit)

1. Open primary latc h s w itc h
2. Relay f ailure RY -3 (Relay Board)
3. Digital programmer c irc uit f ailure

F82*

Ex c es s iv e c urrent c oms umption

(

lower

H.V . c irc uit)

1. Lef t f us e open
2. Open primary

latc h s w itc h

3. Damaged s hort s w itc h
4. Shorted H.V c apac itor, trans f ormer, diode or magnetron (low er)
5. Relay f ailure RY -4 (Relay Board)
6. Digital programmer c irc uit f ailure

F86

Shorted c ontac ts of RY -3

1. Relay f ailure RY -3 (Relay Board)
2. Digital programmer c irc uit f ailure

F87

Shorted c ontac ts of RY -4

1. Relay f ailure RY -4 (Relay Board)
2. Digital programmer c irc uit f ailure

1. Check for proper grounding before troubleshooting.
2. Use caution when servicing high voltage circuit.
3. Discharge high voltage capacitors prior to servicing.
4. When checking for continuity of the switches or the high voltage transformer, disconnect one lead wire from these

parts and then check continuity with the AC plug removed. To do otherwise may result in false reading or may
damage your meter.

5. Be sure to ground any static electricity charge built up in your body before handling the D.P.C. board.
6. 120/208/230V AC is present in the shaded area on the power supply circuit board (Terminals of the power relay and

primary circuit of the low voltage transformer). When troubleshooting be cautious of possible electrical shock hazard.

.

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 advice 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 technician. 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.