Carrier 40MBFAQ Service Manual

40MBFAQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
30
DIAGNOSIS AND SOLUTION (CONT.)
PC 0L (Low ambient temperature protection)
Description: This is a protection function. When the compressor is off, the outdoor ambient temperature(T4) is lower
than -31
 F (-35  C) for 10s, the air conditioner stops and displays the failure code.
When the compressor is on, the outdoor ambient temperature(T4) is lower than -40F(-40C).for 10s, the air conditioner stops and displays a failure
code. When the outdoor ambient temperature (T4) is no lower than -25.6F (-32C) for 10s, the unit exits protection.
EC 0d(Outdoor unit malfunction Diagnosis and Solution)
Description: The indoor unit detect the outdoor unit is error.
Recommended parts to prepare:
• Outdoor unit
Troubleshooting
?
Is the main board
displaying an error?
,
.
WŽǁĞƌŽīƚŚĞŶƌĞƐƚĂƌƚƚŚĞƵŶŝƚƚǁŽ
ŵŝŶƵƚĞƐůĂƚĞƌŽĞƐƚŚĞŽƵƚĚŽŽƌŵĂŝŶ
board display an error code several
ŵŝŶƵƚĞƐůĂƚĞƌ
No
Yes
Refer to the prescribed steps
ƚŽƌĞƐŽůǀĞƚŚĞŝƐƐƵĞ
Yes

Carrier 40MBFAQ Specifications

General

Brand	Carrier
Model	40MBFAQ
Category	Heater
Language	English