Troubleshooting - Sharp R-1900M Operation Manual

Commercial microwave oven
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T
ROUBLESHOOTING
If you think the oven is not working properly there are some
simple checks which you can carry out yourself before you call
for an engineer. This will help prevent unnecessary service
calls if the fault is something simple.
Simply answer "YES" or "NO" to the following questions:
1. Plug the power cord into a three-pronged electric-outlet.
(See page 5)
2. Open the door
A. Does the oven light come on?
3. Place one cup of water (approx. 250ml) in a microwave-
safe glass measuring cup in the oven and close the
door securely. Oven lamp should go off if door is closed
properly.
Set the oven for 30 seconds on 100% (HIGH). At this
moment:
Press these pads:
A. Does the oven light come on?
B. Does the "ON" indicator come on?
C. At the end of 30 seconds, is the water hot?
IF SERVICE IS NEEDED, PLEASE CONTACT YOUR NEAREST
AUTHORIZED SHARP SERVICER.
ERROR MODE
Should any of the error indicators appear in the display, follow the instructions:
EE Mode
EE 1, EE 2
Failure of single magnetron
EE 3
Both magnetrons failed
EE 4
Voltage too high
EE 5
Voltage too low
EE 7
Oven cavity or component
temperature too high
EE 8
Circuit failure
EE 9
Maximum cooking time is
exceeded.
EE 0
Cooling fan motor or other
motor failure. Splash cover is
not installed properly.
★ EE 1 and EE 2 : In case of single magnetron failure, oven can be used until servicing by changing Custom Setting, settings
to allow operation under single magnetron only (see page 15). However, check food carefully as additional
cooking time will be needed when operating with a single magnetron.
Press the STOP/CLEAR pad to clear the error indicator. Any time an error code appears, check the reason and be sure to call
for service except EE7 and EE9. As for EE7, follow Action Required and if EE7 is still displayed, be sure to call for service.
R-1900M [EN].indd Sec1:4
R-1900M [EN].indd Sec1:4
Yes ________No
3
0
Yes ________No
Yes ________No
Yes ________No
Reason
Call for service. ★
Call for service.
Call for service.
Call for service.
Check that nothing is blocking air intake openings on oven back or that
oven exterior is very hot. Correct. Wait a few minutes and try again. If
problem persists, call for service.
Call for service.
Check NOTE for Cooking Double/Triple Quantity with Memory on page 8,
NOTES 2 for Single Stage Cooking or NOTES 2 for Multi Stage Cooking
on page 9 in the Operation Manual.
Press the STOP/CLEAR pad, and re-input by reducing Total Cooking Time
or power levels.
Cooling fan motor and other motors: Call for service.
Splash cover: Check that Splash cover is properly installed. If problem
persists, call for service. (See page 22 - 23)
If you answer "NO" to any question fi rst check that the oven
is plugged in properly and the fuse has not blown, if there
is no fault with either, check against the troubleshooting
chart below.
WARNING:
• Never adjust, repair or modify the oven yourself,
or allow anyone other than a Service Technician,
appointed by SHARP to carry out the service.
• The door seal stops microwave leakage during oven
operation, but does not form an airtight seal. It is normal
to see drops of water, light or feel warm air around the
oven door. Food with a high moisture content will release
steam and cause condensation inside the door which may
drip from the oven.
• Repairs & Modifi cations: Do not attempt to operate the
oven if it is not working properly.
• Outer Cabinet & Lamp Access: Never remove the outer
cabinet. This would be very dangerous due to high voltage
parts inside which must never be touched, as this could
be fatal, As your oven has a removable cover over oven
light bulb, it is possible for you to replace the light bulb
yourseif with care. The light bulb can be purchased from
Sharp Electronics (U.K.) Ltd. See page 39. Unplug the oven
before replacing the light bulb.
Action Required
4
9/29/08 4:08:39 PM
9/29/08 4:08:39 PM

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