Incorrect Wiring And Piping Procedure Check - Carrier 38VYM Series Installation Manual

38VYM
R-410A

Incorrect wiring and piping procedure check

This procedure only applies to models 38VYM-28 and 38VYM-32.
The incorrect wiring/piping procedure check can be performed at an
ambient temperature of 5°C or more.
CHECK LED
Yellow LED (D800)
Red LED (D801)
Red LED (D802)
Sequence with electrical and refrigerant connections correctly
carried out:
• Position the red connector
• Switch the main power supply ON and start all indoor units in
cooling mode.
• Disconnect the red connector
with compressor OFF.
• Start the test sequence for incorrect wiring/piping.
Table IV: Check for incorrect wiring/piping
LED D800 D801 D802 D803 D804 Description
Check
*
*
*
Fault
*
*
LED ON
Legend:
LED OFF
LED flashing
Only for 38VYM-32 model
*
GB - 12
LED
Red LED (D803)
Red LED (D804)
Red connector
outside of terminal block zone.
(incorrect wiring/piping test),
Normal operation (no fault)
Checking unit A1
Checking unit A2
Checking unit A3
Checking unit A4
Kinking/clogging of pipe unit A1
Kinking/clogging of pipe unit A2
Kinking/clogging of pipe unit A3
Kinking/clogging of pipe unit A4
Incorrect wiring/piping or kinking/clogging of pipe unit A1, A2
Incorrect wiring/piping or kinking/clogging of pipe unit A1, A3
Incorrect wiring/piping or kinking/clogging of pipe unit A1, A4
Incorrect wiring/piping or kinking/clogging of pipe unit A2, A3
Incorrect wiring/piping or kinking/clogging of pipe unit A2, A4
Incorrect wiring/piping or kinking/clogging of pipe unit A3, A4
Incorrect wiring/piping of pipe unit A1, A2, A3
Incorrect wiring/piping of pipe unit A1, A2, A4
Incorrect wiring/piping of pipe unit A1, A3, A4
Incorrect wiring/piping of pipe unit A2, A3, A4
Incorrect wiring/piping of packed valve,
that keeps the circuit closed, unit A1, A2, A3, A4
• The yellow LED flashes (D800).
• During the test for incorrect wiring/piping, the
compressor starts operating at a fixed frequency, the outdoor unit
fan operates normally, the indoor unit fans remain OFF.
• The yellow LED and red LED
(D800 and D801).
• The yellow LED and red LED
(D800 and D802).
• The yellow LED and red LED
(D800 and D803).
• The yellow LED and red LED
(D800 and D804).
• Normally the test procedure for incorrect
wiring/piping lasts from 3 to 15 minutes.
• When the test procedure is completed, the compressor and
outdoor unit fan stop operation, the red LED
(D801) flashes, while the yellow one
OFF.
• If no incorrect wiring/piping has been found, system automatically
restarts and the red LED
flashing, turns OFF.
• Reconnect the red connector
At the end of the test, if there is a fault code, the yellow LED
(D800) flashes and the red LEDs that indicate the defect remain ON
(see table).
The compressor does not start and the indoor unit fans operate in
fan only mode.
After the defect has been corrected, repeat the procedure and carry
out another check.
flash
flash
flash
flash
(D800) is
(D801) that was
.