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Components
Service manual
48
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01D – 2022.02
To perform a position check of the 4-way valve
1
First perform an electrical check of the 4‑way valve, see
46].
When outdoor temperature is mild and unit can switch between heating and
cooling
INFORMATION
This procedure is ONLY possible when the outdoor temperature is within the
temperature range for both
Heating
and
Cooling
operation mode. See the
databook on Business Portal for the temperature range of the operation modes.
1
Activate
Heating
operation via the user interface.
INFORMATION
It is recommended to connect the service monitoring tool to the unit and verify the
operation mode of the 4-way valve.
2
Check with a contact thermometer (or by touching) if the flow through the 4-
way valve corresponds with the flow shown in the flow diagram. (See
152]).
Is the flow correct?
Action
Yes
Skip the next step of this procedure.
No
Perform the next step of this procedure.
3
Connect a manifold to one of the service ports of the refrigerant circuit and
check the pressure (suction, discharge). Compare with normal operation
conditions of the unit.
Refrigerant pressure correct?
Action
Yes
Replace the body of the 4‑way valve,
see
49].
No
Leaks may be found in the refrigerant
circuit. Perform a pressure test of the
refrigerant circuit, see
4
De-activate
Heating
and activate
Cooling
operation via the user interface.
5
Check with a contact thermometer (or by touching) if the flow through the 4-
way valve corresponds with the flow shown in the flow diagram. (See
152]).
Is the flow correct?
Action
Yes
4‑way valve is OK. Return to the
troubleshooting of the specific error
and continue with the next procedure.
No
Replace the body of the 4‑way valve,
see
49].
Содержание Comfora ARXP20L
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