Midea MV6-R1000WV2RN1, Руководство по обслуживанию

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V6R VRF 50Hz
144
Midea
V
6R
Series S
er
vice M
anual
2.30 CB1, CB2, CB3, CB4: Overmatch protection
Digital display output
Description

CB1: VRF indoor exceeds the match range (the highest priority)

CB2: AHU kit exceeds the match range (second highest priority)

CB3: HT exceeds the match range (third highest priority)

CB4: The total connection ratio exceeds the match range (the fourth highest priority)

All units stop running.

Error code is only displayed on the master unit.
Trigger / recover condition

Trigger condition: the indoor unit connection ration exceeds the match table below.

Recover condition: the indoor unit connection ration in the range of the match table.

Reset method: Manually restart.
Table 6-2.1: Match table
IDU1 IDU2 IDU3
Total
connection
ratio A(%)
IDU1
connection
ratio B(%)
IDU2
connection
ratio C(%)
IDU3
connection
ratio D(%)
Note
VRF indoor
/ / 40 ≤ A ≤ X
1
40 ≤ B ≤ X
1
/ /
Connect at least
one VRF Indoor
HT / 40 ≤ A ≤ 205 40 ≤ B ≤ X
1
C ≤ 105 /
/ AHU kit 40 ≤ A ≤ X 1 40 ≤ B ≤ X 1 / C ≤ 65
AHU kit / / 40 ≤ A ≤ 115 / / D ≤ 115
Notes:
1.
X is 205 for single outdoor unit system; X is 155 for 2 outdoor units combination system; X is 135 for 3 outdoor units combination units system
Possible causes

Connection ratio does not meet the requirements.
Procedure
CB1, CB2, CB3, CB4
Change indoor unit connection ratio