Carrier 40MBDAQ - Page 28

40MBDAQ: Service Manual
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28
DIAGNOSIS AND SOLUTION (CONT.)
Ed (Outdoor unit malfunction Diagnosis and Solution)
Description: The indoor unit detects an error with the outdoor unit.
Recommended parts to prepare:
• Outdoor unit
Troubleshooting
?
Is the main board
displaying an error?
,
.
WŽǁĞƌŽīƚŚĞŶƌĞƐƚĂƌƚƚŚĞƵŶŝƚ
ϮŵŝŶƵƚĞƐůĂƚĞƌŽĞƐƚŚĞŽƵƚĚŽŽƌŵĂŝŶ
board display an error code a few
ŵŝŶƵƚĞƐůĂƚĞƌ
.
No
Yes
Refer to the prescribed
ƐƚĞƉƐƚŽƌĞƐŽůǀĞƚŚĞŝƐƐƵĞ
Yes