26
88-A5PA3001-1A-EN
Final Installation Checklist
IImmppoorrttaanntt:: Perform a final unit inspection to be sure
that factory tubing has not shifted during
shipment. Adjust tubing if necessary so
tubes do not rub against each other when
the unit runs. Also be sure that wiring
connections are tight and properly secured.
☐ Does the unit run and operate as described in the
Sequence of Operation section in response to the
room thermostat?
☐ Are the condenser fan and indoor blower operating
correctly with proper rotation and without undue
noise?
☐ Is the compressor operating correctly and has the
system been checked with a charging chart?
☐ Has the voltage and running current been checked
to determine if it is within limits?
☐ Has the thermostat been checked for calibration
and the air discharge grills adjusted to balance the
system?
☐ Has the ductwork been checked for air leaks and
condensation?
☐ Has the furnace manifold pressure been checked
and adjusted if necessary?
☐ Has the heating air temperature rise been checked?
☐ Has the unit been checked for tubing and sheet
metal rattles? Are there any other unusual noises to
be checked?
☐ Has all mitigation actions been verified?
☐ Are all covers and panels in place and properly
fastened?
☐ Has the owner been instructed on the proper
operation and maintenance of the unit? Be sure to
leave this manual with the owner.
Verification of Mitigation
Actions
After installation, the installer must verify that the
refrigerant leak detection system actuates all mitigating
actions.
The test can be initiated by shorting the two test pins
on the header of the mitigation control board inside of
the unit. The mitigating actions will continue for
approximately 5 minutes. See Figure 8, p. 26 below.
Figure 8. MCB
Short these pins to test the
refrigerant detection system
Amber and Green LED
diagnostic indicators
If any of the mitigating actions are not actuated by the
system during the test, please check the following:
• All field wiring connections should be checked
against the diagrams in the section of this manual.
• The diagnostic indicators on the mitigation control
board should be checked against the diagnostic
codes given in below.
• Scan the QR code below for more information on
field troubleshooting of the refrigerant leak
detection system.
Table 15. MCB Diagnostic Code Table
Condition Green LED
Amber
LED
Idle or Off Off Off
Startup
On On
No Active Alarm Slow Flash On
Active Alarm (Refrigerant Leak,
Sensor Communicating Error, or
Sensor Error)
3 Flash On
Past Refrigerant Detected Alarm
4 Flash On
Past Sensor Communication Error 5 Flash On
Past Sensor Error 6 Flash On
UUnniitt SSttaarrttuupp
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