3-5
62-10848
3.6.2
Low Battery Voltage Alarm for Road Only
Units
There is a 40 second time delay during start-up. After
this delay if the battery voltage drops below 10V ± 0.2V
for Standby units or 10.5V ± 0.5V for Road only units, the
microprocessor will react 20 seconds later and the unit
will go out of temperature control mode. The micropro-
cessor will check the voltage after another 20 seconds. If
battery voltage still has not risen, the unit will remain out
of temperature control mode for another 10 minutes, and
the battery alarm will be activated and the Cab Com-
mand will display the message “bAt”. Unit will return to
temperature control mode if battery voltage has risen
after 10 minutes. If the battery voltage has not risen after
this 10 minute period, the unit will remain out of tempera-
ture control mode another two minutes and the micropro-
cessor will check the battery voltage every two minutes.
Unit will return to temperature control mode in its current
configuration when battery voltage rises to 10V ± 0.2V
for Standby units or 10.5V ± 0.5V for Road only units.
3.6.3
Clearing Alarm Messages
The alarm list provides information on current alarms
and past alarms which may be helpful in trouble shoot-
ing unit problems. Once all the alarm information has
been noted and service is complete, the alarm list may
be cleared.
To clear the alarm messages:
1. Press the ON key, + key and - key at the same
time.
3.7
Checking the EEPROM Version
1. Press the ON key to start up the unit.
2. Press the SET key to display EEPROM version
number.
3. Press the SET key again to return to the refrig-
erated compartment temperature.
3.8
Stopping the Unit
Press the OFF key or turn the ignition key to the off
position.
Table 3–2 Alarms For Standby Units
Malfunction
Codes
Description
Alarm Only
Alarm and Unit
Shut Down
A00
Red LED flashes
No malfunction.
Unit in operation.
A01
Low pressure switch
X - after 3 successive faults
A02
High pressure switch
X - after 5 successive faults
A03
Electric motor overload protection on start-up
X - after 3 successive faults
A04
Road clutch malfunction
X
A05
Standby clutch and contactor
X
A06
Condenser fan motor fault
X
A07
Evaporator fan motor fault
X
A08
Heating option command
X
A09
Hot gas valve malfunction (HGS1)
X
A10
Quench valve malfunction (BPV)
X
A11
Condenser pressure control valve (HGS2)
X
A12
High temperature alarm
X
A13
Low temperature alarm
X
A14
Defrost alarm > 45 minutes
X
A15
86°F (- 29°C/+ 30°C) or below the programmed
minimum set point
X
BAT
Low battery voltage
X
See
EE
Probe malfunction or evaporator temperature
out of limits [- 49°to 174°F (- 49°to 79°F)]
X
Err
Programming error on part of operator
X
