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5520, 5525, & 5530 WARMING CABINETS
3. Trouble Analysis
Unit will not heat up.
NOTE:
When
block diagram
leads to trouble,
refer to component checks that follow in
this section of manual.
1
Unit will not
heat up
I s DS11, DS12
taser
οι
S PCB "ON"
switch
No
E 을
2
on
PCB
engaged
oor
Yes
Yes
Is current
Check/replace
3
to heaters
door switch
Current
good
Current
or wiring
Zero
Good
Current
Low
Y
|
4
4
Check
bel
Check for
Replace
wiring
heater(s)
operation
PCB
Check that
5
circulation is
not blocked
3
30926
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