Toshiba MAR - M81HTM8 - E Service Manual page 34

TOSHIBA
Multi Controller Display Switch Information
Switch Indicates
Pos.
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0 Serial From B
Branch
1 Fault
Codes
2 Demand
Oil Ret
3
brch B
Defrost
4
5 Timer
6 cct test
7 PMVA
8 PMVB
PMVC
9
10 PMVD
11 ThA
12 ThB
13 ThC
14 ThD
15 ThX
The Hexadecimal codes can be interpreted using the following chart
Display PMV-
Angle
OO Closed
1O
2O
3O
4O
5O
6O
7O 112
8O 128
9O 144
AO 160
bO 176
CO 192
dO 208
EO 224
FO 240
The above chart shows a sample of readings, other intermediate readings may be registered.
AUGUST 1997
6. Fault Code and Display Information
LD 1
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To B To A
Branch Branch
Superheat Superheat
brchB brchA
Operating Mode :Heating (H-), Cooling (-C), Stop (--), Defrost (J-)
Normal Display (OO), Restart Timer Displays (-1) During Count Down
Displays Branch Being Tested (A b C d)
Displays Degree Of PMV Opening As A Hexadecimal Code :
Displays Sensor Readings As A Hexadecimal Code :
Th-AbCdX
ºC
16
32 -8
48 -4
64 0
80 4
96 8
12
16
20
24
28
32
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From A From
Branch Outdoor
For Details of Fault Codes see Page 13
Level of Cooling/Heating Demand (00-1F)
Oil Ret
brchA
Displays "dF" during defrost operation
Indicates Faulty Branch Connection After Circuit Test
(OO) = Closed , (FO) = Fully Open
40=0ºC ; 68=10ºC ; 90=20ºC ; b8=30ºC
Display
OO
O1
O2
O3
O4
O5
O6
O7 16.2
O8 19.3
O9 22.4
OA 25.5
Ob 28.6
OC 31.7
Od 34.8
OE 37.9
OF
Page 15
LD 2
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From D To D To C
Branch Branch Branch
Oil Ret Superheat Superheat
brch D brchD brchC
Level Of Demand
Hz Display
0 1O
0 11
0 12
3.9 13
6.9 14
10 15
13 16
17
18
19
1A
1B
1C
1D
1
41 1F
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From C To
Branch Outdoor
Oil Ret
brchC
Hz
44.1
47.2
50.3
53.4
56.5
59.6
62.7
65.8
68.9
72
75.1
78.2
81.3
84.4
87.5
90