Duke FBB-EO-208 - Troubleshooting Chart

Service Manual for Flexible Batch Broiler Units
32
TROUBLESHOOTING CHART
Symptom Cause Remedy
Control display does not
light up
No Power
Verify 208/240 VAC, 3 phase, present at
receptacle. Conrm 208 VAC or 240 VAC on
Serial Number Label.
Ensure 208/240 VAC, line-to-line, at incoming
terminal block.
On / Off Switch
Ensure 208/240 VAC across input / output of
switch.
Transformer
Ensure 24 VAC across Transformer secondary
winding.
Wiring Check for broken or improper wire connection.
Display ashes
“PnL” & “oFF” –
(Panel Off Error)
Back Panel Safety
Interlock
Check that back panel is safely secured.
Element
Connection
Access Panel
Safety Interlock
Check that side panel is safely secured.
Magnet Alignment
Check alignment of Safety Magnets on back
and side panels.
Safety Interlock
With panels installed, check for continuity on
Safety Interlocks.
Mechanical Relay
Ensure Mechanical Relays energize when
panels are installed. With panels installed.
measure 24 VAC at relay coils.
Transformer
Check for 24 VAC on secondary of
Transformer.
Display shows “Ht:x”,
where x is 1,2,3,4,5,6 –
(Heater Error)
Element
Identify correct Heater location and test
continuity.
Fuse Test continuity of appropriate Fuse.
Solid State Relay
Ensure Solid State Relay switches ON / OFF
at appropriate intervals. Test for closed or
open output condition.
Control
Test Solid State Relay inputs for appropriate
signal from control.
Wiring Check for broken or improper wire connection.