Blodgett BCX14E Troubleshooting Manual page 25

BCX14E
BCX14E TROUBLESHOOTING GUIDE
protruding out ½ inch, inspect the switch for
any damage and for proper adjustment.
3. There are three wires from the door switch that
go directly to the IFB connector J5.
4. Check for 24Vdc active at the IFB relay board
at the connector J5 from (J5-3) to (J5-4).
5. If the door switch has 24Vdc going to it when
the door is closed the back of the door switch
will light up to indicate the door switch has
been activated and the blower motor should
began running.
6. At this point check for +24Vdc_H output from
the IFB connector J5 from (J5-2) to (J5-5). If
the voltage is present and the door switch is
closed now look for an LED indicator at the
IFB relay board CR2 relay (D21). See door
switch troubleshooting flow chart (FIGURE 7).
DRAIN VALVE TROUBLESHOOTING AND
OPERATION
1. The drain valve will always remain in the
closed position during all mode operations.
2. If the oven boiler is below 150 degrees and
after somewhere between 3-5 hours of non use
the logic board will activate the drain valve
motor to open and drain the boiler down then it
will close the drain valve motor and then refill
the boiler to the low level float switch.
3. When troubleshooting the drain valve motor
operation there is a small stem switch on the
right side of the IFB relay board. This can be
depressed to activate the drain valve motor,
while holding the switch (In) the drain valve
motor open fully to drain the boiler down and
when the switch is released the drain valve
motor will return to the normally closed
position. (Caution of a hot boiler).
4. See Troubleshooting (FIGURE 10).
NO STEAM ON DEMAND
1. While depress the steam on demand button
verify at the logic board LED indicators amber
input # 4 and green output # 12.
2. No LED input check for a 24dcv-Rtn_L input
to the logic board at the J3 connector at (J3-7)
of the logic board.
24Dcv_Rtn_L signal go to the steam on
If there is no input
demand switch SW10 and check for a
24Dcv_Rtn_L signal at BK-7 of the switch to
Logic Board J1 connector (J1-4).
NO DELIME PUMP OPERATION
1. The delime pump can be tested with the oven
placed in the cool down, when you press and
hold the steam on demand button for a few
several seconds 24Vdc should be applied
directly the delime pump.
2. Verify when you activate the steam on demand
button, at the logic board LED indicators
amber input #4 and green output #12 light up.
3. If no voltage is found during the first test at the
delime pump, go to the IFB relay board J8
connector and test between (J8-1) to (J8-2)
24Vdc should be present.
4. Continued testing, check for 24Vdc to the R-12
wire at the delime pump testing from the J8
5. IFB connector (J8-2) to the R-12 wire.
voltage is good this would mean the red
+24Vdc is good now check between the V-13
wire at the delime pump to check the
24Vdc_Rtn_L input from the J8 connector test
between (J8-1) to V-13. If no voltage inspect
the IFB relay board for damage.
MOTOR SPEED INVERTER PRGRAMING
1. Every motor speed
programmed from the factory however for
some reason if it lost it's programming it can
be reprogrammed manually.
2. You will see on the inverter drive the green
(Run) and red (Stop/Reset) buttons, below
those two buttons there is a door that will open
up to gain access to the programming keys
need to reprogram the inverter drive.
3. Behind the access door the programming keys
are (FUNC.), (#1⇑ ⇑ ⇑ ⇑ ), (#2 ⇓ ⇓ ⇓ ⇓ ) and (STR).
4. To program the inverter drive back to the
factory settings (See the attached programming
flow chart (Figure 3).
5. See Inverter fault code & stored fault codes
flow chart section 4 (FIGURE 1) page 4-1.
B l o d g e t t O v e n
If
inverter has been
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