Carrier VECTOR 1800 MT - Page 250

62-11039
7-119
Alarm
NO.
Steps ALARM / CAUSE CORRECTIVE ACTION
242 DIS PRESS CALIBRATE ERROR
• TRIGGER–ON: There is an error in the Discharge Pressure Sensor Calibration value stored in memory
•
U
N
I
T
C
O
N
T
R
O
L
:
A
l
a
r
m
O
n
l
y
• UNIT CONTRO
L
:
A
larm Only
• RESET CONDITION: Auto Reset when the Discharge Pressure Sensor is calibrated successfully, or
alarm may be manually reset via keypad or by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active alarm
should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if any active
alarm occurs. Continue with the steps below as necessary.
1. Check Discharge Pressure Reading
a. Check Discharge Pressure Reading Must read valid data.
2. Calibrate Discharge Pressure Sensor
a. Calibrate Discharge Pressure Sensor.
b
D
i
h
P
S
t
b
Calibration successful.
b. Discharge Pressure Sensor can not be
successfully calibrated.
Replace microprocessor
243 SUCTION/EVAP CALIBRATE ERROR
• TRIGGER–ON: There is an error in the Suction / Evaporator Pressure Sensor Calibration value stored in
the microprocessor memory
p
y
• UNIT CONTROL: Alarm only
• RESET CONDITION: Auto Reset when the Suction / Evaporator Pressure Sensor is calibrated
successfully, or alarm may be manually reset via keypad or by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active alarm
should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if any active
alarm occurs. Continue with the steps below as necessary.
1. Check Suction / Evaporator Pressure Reading
a. Check Suction / Evaporator Pressure
Reading
Must read valid data.
2. Calibrate Suction / Evaporator Pressure Sensor
a. Calibrate Suction / Evaporator
Pressure Sensor.
Calibration successful.
R
e
p
l
a
c
e
m
i
c
r
o
p
r
o
c
e
s
s
o
r
b. Suction / Evaporator Pressure Sensor
can not be successfully calibrated.
R
ep
l
ace m
i
croprocessor