Yamato DF412/612 User Manual

56
8. TROUBLESHOOTING
Error Codes
All possible error codes are shown in Table 8.1 below.
On DF/DH series units, operation stops and a sounding alarm accompanies occurring errors.
Pressing any key (except ) will pause the alarm. After three minutes alarm will sound again.
Upper display shows error code and error source source appears in lower display. Confirm error code
and turn power off immediately.
Table 8.1 - Error Codes
Screen
Source
Causes & Solutions
Sensor Failure
 Failure in temperature input circuit.
 Open circuit in temperature sensor line.
 Temperature out of specification range.
Call for service
TRIAC Short Circuit
 Electrical short in TRIAC circuit.
 Faulty current transformer (CT) sensor.
Call for service
Faulty or Disconnected
Heater Line
 Heater line faulty or severed.
 Faulty current transformer (CT) sensor.
 Drop in supply voltage.
Call for service
Fan Motor Failure
 Fan motor malfunction
Call for service
Independent
Overheat Prevention
Device (IOPD)
activated
 Independent Overheat Prevention Device (IOPD) has
activated.
Turn ELB OFF, then back on ON (reset). Check both chamber
temperature and IOPD temperature setting.
If unit does not function normally after ELB reset, call for
service.
Main Relay Contact
Damaged
Turn ELB OFF, then back ON (reset) and confirm:
 whether contact point on main relay is damaged.
 whether current transformer (CT) sensor(s) has failed.
Call for service.

Yamato DF412/612 Specifications

General

Brand	Yamato
Model	DF412/612
Category	Oven
Language	English