Operator`s manual

TROUBLESHOOTING

ERROR CODES:

Err codes can be cleared from the display by turning the front panel power switch off and then on again.

Code Description Possible Cause

Err 1 Over Temperature Temp > 1120°C, shorted thermocouple, shorted triac, shorted optotriac,

wiring connections, computer PCB

Err 2 Open Thermocouple Open TC tip, connection to TC, TC to (TC) PCB connection, computer PCB

Err 3 Temp > Tmax Muffle temperature has exceeded the programmed limit temperature TMAX

(see SETUP?).

Err 7 Brown-out Low line voltage < 90VAC (<190VAC for 200-240V), wall socket shared with

other loads, furnace connected with small extension cord

Err 8 EEPROM error Parameter program memory error; computer PCB

Err 19 Line frequency No line frequency detected, computer PCB