SYSTEM OPERATION
7
COMFORTBRIDGE SYSTEM ADVANCED FEATURES
The ComfortBridge system permits access to system in-
formation, advanced set-up features, and advanced diag-
nostic/troubleshooting features via the control board push
buttons or the CoolCloud HVAC app.
FAULT CODE HISTORY
The heat pump’s diagnostics menu provides access to the
most recent faults. The six most recent faults can be ac-
cessed through the control board seven segment displays.
Any consecutively repeated fault is stored a maximum of
three times.
EXAMPLE:
A leak in the system, low refrigerant charge
or an incompletely open stop valve can cause the unit to
flash error code E15. This error code suggests that the unit
is experiencing operation at low pressure. The control will
only store this fault the first three consecutive times the fault
occurs.
NOTE:
The fault list can be cleared after performing mainte-
nance or servicing the system to assist in the troubleshoot-
ing process.
DEVICE STATUS
This menu displays information about the systems current
status. This menu can be utilized to confirm correct func
-
tionality of the equipment and for troubleshooting purposes.
The following items will be displayed:
• Heat Capacity Request Percentage
• Cool Capacity Request Percentage
• Heat Capacity Request During Defrost Percentage
•
Dehumidification Request Percentage
• Reversing Valve Status
•
Reported Airflow by Indoor Unit
• Boost Mode
• Previous Defrost Run Time
SENSOR DATA
The following sensor values will be displayed:
• Outdoor Temperature
• Coil Temperature
• Liquid Line Temperature
• Discharge Temperature
• Defrost Sensor
• Suction Pressure
PUMP DOWN / CHARGE MODE
This function can be enabled in this menu.
COOL SET-UP
The system allows for the adjustment of several cooling
performance variables. Cool Airflow Trim (*1), Cool Airflow
Profiles, Cool Fan ON Delay, Cool Fan OFF Delay and
Dehumidification Select (some enable option or off) can be
adjusted in this menu. You can also reset this entire menu
to factory default settings. See the following images show-
ing the four cooling airflow profiles.
NOTE:
For regions with high humidity, it is strongly rec-
ommend to use a thermostat with humidity sensor and
dehumidification terminal. Without this type of thermostat,
dehumidification operation does not work.
Dehumidification requires a thermostat capable of reading
the indoor humidity level and allowing the user to set a
dehumidification target.
The thermostat controls the humidity level of the condi-
tioned space using the cooling system. Dehumidification
is engaged whenever a cooling demand is present and
humidity levels are above the target level.
When this condition exists, the circulating fan output is re-
duced, increasing system run time, over cooling the evap-
orator coil and ultimately removing more humidity from the
structure than if only in cooling mode.
The thermostat may also allow for an additional overcool-
ing limit setting depending on the thermostat utilized. This
allows the cooling system to further reduce humidity by
lowering the temperature below the cooling setpoint in an
attempt to better achieve desired humidity levels.
