Start-Up; Care And Maintenance; Troubleshooting - Carrier 38MARB Installation Instruction

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START-UP

Test Operation
Perform a test operation after completing a gas leak and electrical safety
check. Review the indoor unit installation instructions and owner's man-
ual for additional start up information.
System Checks
1. Conceal the tubing where possible.
2. Ensure that the drain tube slopes downward along its entire length.
3. Ensure all tubing and connections are properly insulated.
4. Fasten the tubes to the outside wall, when possible.
5. Seal the hole through which the cables and tubing pass.
Outdoor Unit
1. Are there unusual noises or vibrations during operation?
Explain the Following Items to the Customer (with the
aid of the Owner's Manual):
2. Explain care and maintenance.
3. Present the installation instructions to the customer.

CARE AND MAINTENANCE

To help ensure high performance and minimize possible equipment fail-
ure, periodic maintenance must be performed on this equipment.
Maintenance frequency may vary depending upon geographic areas.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

TROUBLESHOOTING

For ease of service, the systems are equipped with diagnostic code dis-
play LEDs on both the indoor and outdoor units. The outdoor
diagnostic display are two LEDs (Red and Green) on the outdoor unit
board and is limited to very few errors. The indoor diagnostic display is
a combination of flashing LEDs on the display panel or the front of the
unit.
There may be a few error codes displayed in the indoor unit that might
relate to the outdoor unit's problems. If possible, always check the
diagnostic codes displayed on the indoor unit first. The diagnostic codes
displayed in the outdoor units are listed in Table 10.
Table 10 — Unit Diagnostic Guides
GREEN LED RED LED
On X
X On
On On
On
☆
X
☆
On
☆
X
☆
☆ ☆
☆ = Flashing, X = Off
For additional diagnostic information, refer to the service manual.
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FAILURE MODE
Standby, normal
Operation, normal
High/Low voltage protection on
compressor terminal
EEPROM error
The compressor speed is out of control
Zero-crossing signal detection error; lack
of phase; synchronization error
IGBT or Module protection
Communication error