Sw8/Sw9 Query Instruction; Test Run - Carrier 40VMD 006 Installation And Maintenance Instructions Manual

Table 20 — Display Code Definitions
DISPLAY DSP1 AND DSP2 DISPLAY DEFINITION
S E0 Communication error with outdoor unit
S E1 T1 temperature sensor error
S E2 T2 temperature sensor error
S E3 T3 temperature sensor error
S E4 High pressure sensor error
S E5 Intermediate pressure sensor error
S E6 Low pressure sensor error
S P1 High pressure protection
SC ER Commissioning test failure
no ID No indoor unit under Indoor Unit 1
Indoor capacity overload under Indoor No.y
CS x
SW8/SW9 Query Instructions —
either SW8 or SW9, the MDC's LED display will show a
query code. Press SW8 to move up in number. Press SW9 to
move down in number (i.e., 00) and then it will display the
corresponding value. See Table 21 for an explanation of these
display codes.
NOTE: The main MDC and sub MDC have the same query
instructions. If the sub MDC does not have this parameter it
displays the value of the main MDC unit.
Table 21 — MDC Query Codes
DESCRIPTION
DISPLAYED
First and
Second Digit
Number of
--00 online micro-
processors
Number of
--01 open micro pro-
cessors
Number of
--02 cooling indoor
units
--03 Outdoor unit operation mode
--04 Opening of EXVA
--05 Opening of EXVB
--06 Opening of EXVC
--07 Liquid inlet temperature (T1)
Liquid refrigerant temperature
--08
--09 Bypass outlet temperature (T3)
--10 High pressure (H-YL1)
--11 Intermediate pressure (H-YL2)
--12 Low pressure (L-YL1)
--13 Version of software
--14
(y=X+1)
When you press
COMMENT
Third and
Fourth Digit
Number of
online indoor Actual value
units
Number of
open indoor Actual value
units
Number of
heating indoor Actual value
units
--
Actual value
Actual value
Actual value
Actual value
(degrees C)
Actual value
(degrees C)
(T2)
Actual value
(degrees C)
Actual value=
display value x
0.1 MPa
Actual value=
display value x
0.1 MPa
Actual value=
display value x
0.01 MPa
--
---- Check end
Before commencing a test run please check the following:
1. Ensure the MDC unit, indoor unit and outdoor unit are
installed correctly.
2. Ensure the piping and wiring are completed correctly.
3. Ensure there are no refrigerant leaks.
4. Ensure the drain is not clogged.
5. Ensure the piping is insulated.
6. Ensure the ground wiring is connected correctly.
7. Ensure the added refrigerant amount and added is correct,
based on the actual pipe length.
8. Ensure the supplied power voltage matches the voltage
on the unit nameplate.
9. Ensure the connected indoor unit quantity during the
quick check MDC query is the same as the actual
quantity.
19

TEST RUN