Sanyo MDF-C8V service manual Alarms & Safety Functions, Alarms and safety functions

ALARMS & SAFETY FUNCTIONS

This unit has the alarms and safety functions shown in Table 7, and also self diagnostic functions.

Table 7 Alarms and safety functions

Alarm & Safety	Situation	Indication	Buzzer	Safety operation
High temperature	If the chamber temperature is higher	Alarm lamp is flashed.	Intermittent tone	Remote alarm with
	than the temperature at which the	Temperature indicator is	with 15 minutes
alarm				15 minutes delay.
	high temperature alarm is activated.	flashed.	delay.
Low temperature	If the chamber temperature is lower	Alarm lamp is flashed.	Intermittent tone	Remote alarm with
	than the temperature at which the	Temperature indicator is	with 15 minutes
alarm				15 minutes delay.
	low temperature alarm is activated.	flashed.	delay.
Power failure	In the case of power failure.
	When the power cord is	Alarm lamp is flashed.	Intermittent tone	Remote alarm.
alarm
	disconnected.
	When approx. 2.8 years has passed
Battery check	with the power cord connected to	Battery check lamp lights.	-----	-----
	the outlet.
	If the thermal sensor is	Alarm lamp is flashed.
		E01 and chamber temp.
	disconnected..
		are displayed alternately.
			Intermittent tone	Remote alarm.
	If the thermal sensor is	Alarm lamp is flashed.
		E02 and chamber temp.
	short-circuited
Sensor		are displayed alternately.
abnormality	If the thermal sensor of the	Alarm lamp is flashed.
		E05 and chamber temp.
	compressor is disconnected.
		are displayed alternately.
			Intermittent tone	Remote alarm.
	If the thermal sensor of the	Alarm lamp is flashed.
		E06 and chamber temp.
	compressor is short-circuited
		are displayed alternately.
Battery switch	When battery switch is OFF at	Alarm lamp is flashed.	-----	-----
check	the time of alarm test.	E09 is flashed.
		Alarm lamp is flashed.		Remote alarm.
Condenser temp.	In the event of failure of fan motor			Compressor of
		E10 and chamber temp.	Intermittent tone
abnormality	for cooling the compressor.			high stage side
		are displayed alternately.
				stops.

Note:

ŶAfter power failure, the operation is resumed with the condition before power failure.

ŶThe chamber temperature is displayed for 5 seconds if the alarm buzzer stop key (BUZZER) is depressed during the power failure alarm. After that, the alarm buzzer stops. The alarm lamp (ALARM) keeps blinking.

ŶIn the case of sensor abnormality (E01 or E02 is displayed), the freezer continues to run.

53

20