Carrier 40MBFAQ - Page 34

40MBFAQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
34
DIAGNOSIS AND SOLUTION (CONT.)
FH 07 (Communication malfunction between indoor unit and auto-lifting panel Diagnosis and Solution)
Description: The indoor PCB does not receive feedback from the PCB of the auto-lifting panel.
Recommended parts to prepare:
• Connection wires
• PCB of auto-lifting panel
• Indoor PCB
Troubleshooting
ŽŵŵƵŶŝĐĂƟŽŶĨĂŝůƵƌĞďĞƚǁĞĞŶƚŚĞŝŶĚŽŽƌƵŶŝƚ
ĂŶĚƚŚĞĂƵƚŽͲůŝŌŝŶŐƉĂŶĞů
NO
ZĞ
Ɖů
ĂĐĞƚ
Ś
ĞŝŶĚŽŽƌŵĂŝŶW

ZĞƉůĂĐĞƚŚĞŝŶĚŽŽƌŵĂŝŶW

YES

,ĂƐƚŚĞƉƌŽďůĞŵďĞĞŶƐŽůǀĞĚ
Ͳ
ŚĞĐŬƚŚĞǁŝƌĞĐŽŶŶĞĐƟŽŶďĞƚǁĞĞŶƚŚĞ
ĂƵƚŽͲůŝŌŝŶŐƉĂŶĞůĂŶĚƚŚĞŝŶĚŽŽƌƵŶŝƚ

ZĞƉůĂĐĞƚŚĞŵĂŝŶĐŽŶƚƌŽůŽĨƚŚĞĂƵƚŽͲůŝŌŝŶŐƉĂŶĞů
ŽƌƌĞĐƚƚŚĞĐŽŶŶĞĐƟŽŶ
NO
/ƐŝƚŝŶǁŽƌŬŝŶŐŽƌĚĞƌ