Fault Codes
The table below describes error codes and the corrective action.
Error # Cause/Description Corrective Action
1 Cannot communicate with thermocouple A/D converter (U3). Poten-
tially failed PC Board Component.
Turn unit o and back on again. If error persists, this may indicate a
failed PC Board component. Contact Antunes Technical Service for
assistance 877-392-7854.
2 Cannot detect power line zero cross. Potentially failed PC Board
Component.
3 Calibration check sum. Potentially failed PC Board Component.
4 Microprocessor I2C buss communications error. Potentially failed
PC Board Component.
5 Microprocessor I2C buss communications error. Potentially failed
PC Board Component.
6 Cannot communicate with Fram (U9). Potentially failed PC Board
Component.
7 Cannot communicate with TMP75 (board temp sensor) (U4). Poten-
tially failed PC Board Component.
8 On-board voltage reference in thermocouple circuit failed (U1).
Potentially failed PC Board Component.
9 Not used. Not Used
10 Board temp sensor exceeds 158° F. Verify vents on toaster are unblocked and not near other heated
appliances. If error persists, contact Antunes Technical Service for
assistance 877-392-7854.
11 Main Hi Limit tripped. Reset Hi Limit, turn unit o and back on again. If error persists, con-
tact Antunes Technical Service for assistance 877-392-7854.
12 Cannot measure power line voltage Failed on-board transformer
used for power control (T1).
Turn unit o and back on again. If error persists, contact Antunes
Technical Service for assistance 877-392-7854.
13 USB port voltage below 4.5V - Something plugged into USB port. Remove anything connected to the USB port, turn unit o and back
on again. Turn unit o and back on again. If error persists, contact
Antunes Technical Service for assistance 877-392-7854.
14 Main platen has not reached set point within 20 minutes.
Turn unit o and back on again. If error persists, contact Antunes
Technical Service for assistance 877-392-7854.
15 Main platen has exceeded 650° F.
16 Main platen has fallen 50°F below set point after Ready state.
17 Main thermocouple failed (open).
18 Aux has fallen 50°F below set point after Ready state; will clear from
display if temperature recovers; error is logged into memory.
Make sure front and rear covers are in proper position. Turn unit
o and back on again. If error persists, contact Antunes Technical
Service for assistance 877-392-7854.
19 Auxiliary Heater exceeds 525° F.
20 Auxiliary Heater does not reach set point within 20 minutes.
21 Auxiliary thermocouple failed (open). Turn unit o and back on again. If error persists, contact Antunes
Technical Service for assistance 877-392-7854.
22 Auxiliary Hi Limit (hardware circuit trips at 550°F which turns o
contactor; ER22 then shows within 2 seconds).
Turn unit o and back on again. If error persists, contact Antunes
Technical Service for assistance 877-392-7854.
23 Cannot communicate with motor microprocessor (U13). Turn unit o and back on again. If error persists, this may indicate a
failed PC Board component. Contact Antunes Technical Service for
assistance 877-392-7854.
24 Motor stopped. Make sure no buns are stuck in conveyors or any obstructions
around conveyors. Turn unit o and back on again. If error persists,
contact Antunes Technical Service for assistance 877-392-7854.
P/N 1011376 Rev. D 11/20
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