G
glopezJul 30, 2025
What to do if the 2nd zone sensor is not configured on my Fujitsu Heat Pump?
- RRobert DiazJul 30, 2025
If the 2nd zone sensor is not configured (if 2nd circuits kit), it's because of BX31. Set the parameter 5700 to 2, 4 or 6.
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If the 2nd zone sensor is not configured (if 2nd circuits kit), it's because of BX31. Set the parameter 5700 to 2, 4 or 6.
Outlines requirements for appliance installation and maintenance.
Provides guidelines for outdoor unit placement and clearances.
Explains how to position the outdoor unit for optimal performance and safety.
Covers room requirements, ventilation, and safety during hydraulic unit installation.
Explains the 3-empty method for creating a vacuum.
Details how to perform a seal test using nitrogen.
Describes the process of filling the installation with refrigerant gas.
Explains how to check for leaks after gassing.
Details how to add refrigerant charge based on pipe length.
Describes the procedure for collecting refrigerant from the outdoor unit.
Covers rinsing the system and connecting to the heating circuit.
Introduces the user interface, room control units, and thermostats.
Suggests optimal settings based on different heating emitter types.
Performs a test on the regulator's relays and checks outputs.
Lists faults displayed on the hydraulic unit's digital interface.
Outlines annual checks for hydraulic components like the expansion vessel and safety valve.
Details maintenance procedures for the domestic hot water tank, including emptying and descaling.
Explains how to clean the outdoor unit's heat exchanger and check airflow.
Describes checks for electrical connections, cables, and boards.
Provides steps for emptying the hydraulic unit.
Provides a checklist for pre-start-up inspections of various unit components.
General