Commissioning; Maintenance; Filter Cleaning; Adding Water To Circuit - Carrier 80AWX Manuel D'installation

5.8.2 - Communication kit installation
See fig. 21.
Connect the board in the kit on the J8 connector of the
main board and to the unit terminal block.

5.9 - Commissioning

5.9.1 - Preliminary Checks
Make sure that:
• The hydronic system connections are correctly
tightened.
• There are no leaks.
• The installation is purged completely; poor purging can
cause deterioration of pumps and electric heaters.
• The pumps are empty and purged completely before
power is switched on.
• The circuit valves are open and the pumps are set to
the speed determined in the study.
• The filling and drain valves are closed.
• The water circuit pressure is 1 bar.
• The filter is installed.
• The electrical connections are correctly tightened; poor
tightening can cause running problems and overheating
which may result in major damage.
• Earth connections are made for all the installed
components.
• No tools or other foreign objects are left inside the unit.
• The unit is stable.
5.9.2 - Startup
Do NOT switch on the electric heater circuit breakers
until the installation is completely purged; poor purging
can cause deterioration of pumps and electric heaters.
• Switch the main isolating switch and the circuit
breakers ON.
• Select OFF mode on the user interface.
• Start the outdoor unit by setting code 147 = 4 (booster
heat).
• After the outdoor unit has run for ten minutes, set the
code147 = 0, and check if the unit has stopped.
• Close the valves, switch the main switch OFF and clean
the filter.
• Repeat this operation several times if necessary, until
the filter stops retaining impurities.
• Do NOT forget to exit Forced mode (set code 147 = 0)
after the test.

6 - MAINTENANCE

Refer to the Safety Information Manual.
The equipment should be serviced periodically to maintain
performances and reliability.
The product warranty may be invalidated due to wrong or
incomplete maintenance.
The user is not authorized to open the unit or remove any
of its parts.
Any maintenance activity requiring opening of the unit
must be carried out by qualified service personnel.
30
Carry out the following operations at least once a year:
• Check the expansion vessel.
• Check all the parts for wear.
• Check setpoints and operating points.
• Check safety devices.
• Check electrical connections for tightness.
• Check the earth connections.
• Check for water and refrigerant leaks.
• Check operation and parameters.
• Clean the water filter.
• Check the rotation of pumps.
• Check the system pressure.
• Clean the outdoor unit heat exchanger.
• Clean the condensate tray.

6.1 - Filter Cleaning

• This operation must be performed only by an
authorized service personnel.
• Clean the filter frequently if low water flow is detected.
• Select OFF mode on the user interface.
• Switch the main switch OFF.
• Close the valves at the bottom of the hydronic module.
• Open the filter and clean it.
• Close the filter tight, to avoid water leakage.
• Open the valves at the bottom of the hydronic module.
• Add some water if needed.
• Switch the main switch ON.
• Select the desired mode on the user interface.

6.2 - Adding Water to Circuit

This operation can be performed by the user.
For safety reason, do NOT open the indoor or outdoor
unit.
The corrected operating pressure is 1 bar; if the pressure is
lower than 1 bar, it is necessary to add water in the circuit.
See fig. 2 and 3
• Open the filling valve.
• Close the filling valve when the water pressure reaches
1 bar (check the manometer).

6.3 - Diagnostics

In case of system failure, the alarm icon (
on the user interface.
Failures are identified by a fault code.
Active fault codes will be displayed in sequence, with a
change rate of 1 second.
IMPORTANT (Unités monophasées)
Le conducteur de terre du câble de
connexion unité intérieure-unité extérieure
doit être serti à un cosse à œillet en cuivre
recuit étamé avec orifice M4 pour vis.
) will light up
ATTENTION
Pour les unités triphasées, veiller à fixer le porte-
filtre et le serre-câble au câble d'alimentation
de puissance afin d'assurer la conformité aux
réglementations de sécurité et EMC. (Voir fig. 12)