TurboChef NGC (Tornado) User Manual

19
THE CONTROL SYSTEM
ISSUE RESOLUTION
“Cook Door Open”
Message when door
is closed.
1. Determine which Interlock Switch is open by entering the Test Mode.
Examine the Switch(es) indicated as “Open”.
o
If the Switch(es) is/are mechanically opened - i.e., the Cook Door
is not actuating the switch - then refer to page 34 to adjust the
Cook Door.
o
If the switches are mechanically closed, but the Control indicates
an “Open” verify wiring going to each Interlock Switch. Correct any
wiring issue or replace the Interlock Switch if it is failed closed.
F1: Blower Running
Status Bad
Motor not running
when commanded.
1. Status Indicator “A” is highlighted/backlit in Test Mode.
Verify 208/240 VAC is going to the Motor Controller via Pins 2 and 3.
o
208/240 VAC is present: Verify control wiring from the Motor
Controller and I/O Control Board, specifically Low Voltage Wire
OR-9. If all wires are OK, then refer to page 45 for Motor
Controller Trouble Shooting.
o
208/240 VAC is not present: Correct wiring going to the Motor
Controller.
2. Status Indicator “A” is not highlighted in Test Mode.
Refer to page 45 (F1: “Blower Defective”) for Motor Controller
Trouble Shooting.
F3: M
agnetr
on C
urrent
Lo
w
1. Check that the K2 Mechanical Relay is in good working order.
If Relay is OK: Refer to page 30 (F3: Magnetron Current Low) for
detailed instr
uctions on tr
ouble shooting.
F8: Heat Rise Low
: This message
occurs in
W
arm-up and
S
elf-T
est if the o
v
en fails
to warm-up in a prede-
ter
mined time period.
1. Verify the High-Limit Thermostat is not tripped.
o
I
f H
igh-Limit is tripped: R
eset and allo
w the o
v
en to warm-up
.
o
If High-Limit is not tripped: Proceed to instructions below.
H
igh-Limit is not tripped:
Check both K4 and K5 SSRs by activating them in Test Mode.
When actuated, the (-) contr
ol input of the SSR will go to 0.00 VDC.
When the relay is not actuated the input will read -24.00 VDC.
o
If the control voltage is not pulled down during actuation: Verify
the wiring between SSR and the I/O Control Board. Replace SSR
if wiring OK.
o
If the control voltage is pulled down: Refer to Figure 31 on page 41.

TurboChef NGC (Tornado) Specifications

General

Brand	TurboChef
Model	NGC (Tornado)
Category	Oven
Language	English