Fisher FSAI-CP-90BE3 Service Manual page 49

Display Method of Indoor Unit
Indicator Display (during
blinking, ON 0.5s and OFF
Dual-8
Malfunction
No.
0.5s)
Name Code
operation
Display
Indicator
Gathering
11 Fo
refrigerant
Indoor
ambient
temperature
12 F1
sensor is
open/short
circuited
Indoor
evaporator
temperature
13 F2
sensor is
open/short
circuited
Outdoor
ambient
temperature
14 F3
sensor is
open/short
circuited
Outdoor
condenser
temperature
15 F4
sensor is
open/short
circuited
Outdoor
discharge
temperature
16 F5
sensor is
open/short
circuited
Limit/
decrease
17 frequency F6
due to
overload
Decrease
frequency
18 F8
due to
overcurrent
46
Cool Heating
Indicator Indicator
When the outdoor unit receive signal of
Gathering refrigerant ,the system will
be forced to run under cooling mode for
gathering refrigerant
During cooling and drying
operation, indoor unit operates
while other loads will stop; during heating
operation, the complete unit will stop
operation.
AC stops operation once
reaches the setting
temperature. Cooling, drying:
internal fan motor stops
operation while other loads
stop operation; heating: AC
stop operation
During cooling and drying
operating, compressor stops while indoor
fan operates; During heating operation,
the complete unit will stop operation
During cooling and drying
operation, compressor stops while indoor
fan will operate; During heating operation,
the complete unit will stop operation.
During cooling and drying
operation, compressor will sop
after operating for about 3 mins,
while indoor fan will operate;
During heating operation, the
complete unit will stop after
operating for about 3 mins.
All loads operate normally, while
operation frequency for
compressor is decreased
All loads operate normally, while
operation frequency for
compressor is decreased
A/C status
Nominal cooling mode
1. Loosening or bad contact of
indoor ambient temp. sensor and
mainboard terminal.
2. Components in mainboard fell
down leads short circuit.
3. Indoor ambient temp. sensor
damaged.(check with sensor
resistance value chart)
4. Mainboard damaged.
1. Loosening or bad contact of Indoor
evaporator temp. sensor and
mainboard terminal.
2. Components on the mainboard fall
down leads short circuit.
3. Indoor evaporator temp. sensor
damaged.(check temp. sensor value
chart for testing)
4. Mainboard damaged.
Outdoor temperature sensor hasnt been
connected well or is damaged. Please
check it by referring to the resistance table
for temperature sensor)
Outdoor temperature sensor hasnt been
connected well or is damaged. Please
check it by referring to the resistance table
for temperature sensor)
1.Outdoor temperature sensor hasnt been
connected well or is damaged. Please
check it by
referring to the resistance table for
temperature sensor)
2.The head of temperature sensor hasnt
been inserted into the copper tube
Refer to the malfunction analysis (overload,
high temperature resistant)
The input supply voltage is too low;
System pressure is too high and overload
Service Manual
Possible Causes
Installation and Maintenance