Monitor Of Freezer Status - Sanyo MDF-U53V Service Manual

MONITOR OF FREEZER STATUS

The freezer has a function to monitor the running status of the unit as shown in table 7 below. This is to
notice the running status getting worse (not failure).
1. The status monitor lamp is lit when one of the running status shown in table 7 is detected.
2. The S code (--X, X: 1 to 3) is displayed on the temperature indicator by pressing STATUS key when
the STATUS lamp is lit.
3. Pressing the STATUS key again returns to current chamber temperature on the temperature indicator.
(The indication returns to the chamber temperature display automatically when no key is operated for 90
seconds.)
Table 7. Monitor of running status
Kind of
function
Notice of When the ambient
abnormal temp. is over approx.
ambient 35
temperature about 0
When the power
source voltage is
Notice of low less than approx.
voltage 195V when the rated
voltage is between
220 and 240V.
When the running
Notice of
rate of refrigerating
overload
Circuit is higher than
condition
usual.
Note:
• The S code displayed on the temperature indicator is changed every few seconds if two or three status
shown in the above table are detected at the same time.
• The monitoring function does not trigger a buzzer or conduct a safety operation.
the case of multiple indication of S code, follow the remedy for each status.
• The status monitor lamp (STATUS) may be lit under normal running condition when the independent
inner door (MDF-7ID or MDF-5ID) is installed because of less cooling performance. In this case, adjust
the air conditioning so that the ambient temperature is around 23
o
10 C higher than the current setting.
Status
STATUS lamp
lights.
o
C or lower than
"--1" is displayed.
o
C.
STATUS lamp
lights.
"--2" is displayed.
STATUS lamp
lights.
"--3" is displayed.
If this status
Indication
continues
Decrease of cooling
performance or
durability of
refrigerating circuit.
Abnormal heat at
power supply outlet
or degrade of
starting performance
of refrigerating
circuit
Decrease of cooling
performance or
durability of
refrigerating circuit.
--1 --2
o
C, or set the chamber temperature
51
Remedy
Recheck air-
conditioning of
installed site.
Use dedicated
power source.
1. This is likely to
happen when a
large amount of
materials is stored.
2. Check ambient
temp., voltage, and
sealing of
outer/inner door.
--3 --1 repeated
18