Carrier 40MBFAQ Service Manual

40MBFAQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
22
DIAGNOSIS AND SOLUTION (CONT.)
EL 0C (Refrigerant Leakage Detection Diagnosis and Solution)
Description: Define the evaporator coil temperature T2 of the compressor which starts running as Tcool. After unit start up and
five minutes after the compressor starts up, if T2 < Tcool-1°C(1.8°F) does not maintain for 4 seconds and the compressor
running frequency (higher than 50Hz) does not maintain for 3 minutes, and this situation occurs 3 times, the display area
displays “EL 0C” and air conditioner unit turns off.
Recommended parts to prepare:
• T2 sensor
• Indoor PCB
• Additional refrigerant
Troubleshooting
Power o, then restart the unit 2 minutes later.
Are any leaks present?
Check the system for blocks and
clear blocks if any.
Does a problem remain?
Put your hands in front of the
indoor air outlet.
YES
Is there cool air
air blowing out from
indoor air outlet?
Is it
securely attached?
Replace the
indoor PCB.
YES
Check the T2 sensor.
YES
Check system for leaks.
NO
NO
Repair the leak and
recharge the refrigerant.
YES
NO

Carrier 40MBFAQ Specifications

General

Brand	Carrier
Model	40MBFAQ
Category	Heater
Language	English