201703
95
P
art 4 - Diagnosis and T
roubleshoo
ting
Procedure
4.22.4
Pd
Air side heat exchanger refrigerant outlet
temperature sensor is loose
1
Yes
Ensure the temperature sensor is
connected properly
No
Air side heat exchanger refrigerant outlet
temperature sensor has short-circuited
or failed
2
Yes
Replace the temperature sensor
No
The air side heat exchanger heat
exchange is poor
3
Yes
Inspect the system and fix the error
No
The fan or fan motor is blocked or
damaged
Yes
Inspect the system and fix the error
No
Replace outdoor main PCB
Notes:
1.
Air side heat exchanger refrigerant outlet temperature sensor and outdoor ambient temperature sensor connection port is CN9 on the outdoor unit main
PCB (labeled 7 in Figure 4-2.1 in Part 4, 2.1 “Outdoor Unit PCBs”, (labeled 5 in Figure 4-2.3 and Figure 4-2.5 in Part 4, 2.1 “Outdoor Unit PCBs”).
2.
Measure sensor resistance. If the resistance is too low, the sensor has short-circuited. If the resistance is not consistent with the sensor’s resistance
characteristics table, the sensor has failed. Refer to Part 2, 1.1 “Outdoor Unit Layout” and to Table 4-5.1 in Part 4, 5.1 “Temperature Sensor Resistance
Characteristics”.
3.
Check air side heat exchanger, fan(s) and air outlets for dirt/blockages.
MUNDOCLIMA AEROTHERM V17 - BIBLOC
