Super Multi System - Toshiba
Super Multi System - Toshiba
Super Multi System - Toshiba
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32<br />
Diagnostic procedure<br />
<strong>Multi</strong> Controller<br />
The combination of the display switch and the four 7-segment LEDs (LD 101-LD 104) indicates the<br />
diagnostic details.<br />
7 segment LED display<br />
Unit B Unit D<br />
Unit A Unit C<br />
Capacity rank switches<br />
MCC - 1223<br />
7-segment LED<br />
LD 102 LD 104<br />
LD 101 LD 103<br />
Display switch<br />
<strong>Multi</strong> Controller control board<br />
Switch<br />
position<br />
Indication LD 101LD 102 LD 103 LD 104<br />
0 Serial - - - Receiving Sending - Sending Receiving Receiving - Receiving Sending - Sending Receiving Sending<br />
signal from to to from from from to to from to<br />
unit B unit B unit A unit A oudoor unit D unit D unit C unit C outdoor<br />
unit unit<br />
1 Fault<br />
codes<br />
[E] - Fault code display (normal [00]). Refer to fault code section for details.<br />
2 Frequency Instructed demand frequency of cooling or heating [00 - 1F].<br />
instructions Refer to the <strong>Multi</strong> Controller display conversion table (1) for display switch position “2”<br />
to the outdoor<br />
unit<br />
3 Oil - - - Oil <strong>Super</strong>heat - <strong>Super</strong>heat Oil - - Oil <strong>Super</strong>heat - <strong>Super</strong>heat Oil -<br />
retrieval, retrieval control control retrieval retrieval control control retrieval<br />
superheat<br />
control<br />
unit B unit B unit A unit A unit D unit D unit C unit C<br />
Defrost Displays [dF] during defrost operation<br />
4 Operation M/C operating Outdoor unit operating mode: Heating [H-], Cooling [-C], Simultaneous Heating [Hc],<br />
mode mode:<br />
Heating [H-],<br />
Cooling [C-]*<br />
Simultaneous Cooling [hC], Stop [--], Defrost [J-]<br />
5 Restart<br />
timer<br />
- - - Normal display [0], Restart timer counting [1]<br />
6 Circuit test [c] [k] Displays unit being tested [A b C d] Indicates faulty unit connection [A b C d]<br />
7 PMV A [P] [A] Displays the degree of PMV opening (0-240) as a hexadecimal code:<br />
8 PMV B [P] [b] [00]: Closed, [FO]: Fully open<br />
9 PMV C [P] [c]<br />
10 PMV D [P] [d]<br />
11 ThA [h] [A] Displays sensor temperature<br />
12 ThB [h] [b] Refer to the <strong>Multi</strong> Controller sensor temperature conversion table (1).<br />
13 ThC [h] [c]<br />
14 ThD [h] [d]<br />
15 ThX [h] [H]<br />
* and Simultaneous Cooling/Heating [HC], Defrost [J-]