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CLIVET WSAN-YMi 31 - User Manual

CLIVET WSAN-YMi 31
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WSAN-YMi
21 - 81
MANUAL

Table of Contents

Questions and Answers

  • C
    Christopher SandovalAug 12, 2025
    Why is my CLIVET Air Conditioner not heating or cooling properly?
    • A
      angela00Aug 12, 2025
      If your CLIVET Air Conditioner isn't heating or cooling as expected, it could be due to several reasons. First, check if the temperature setting on the controller is correct (T4HMAX, T4HMIN in heat mode; T4CMAX, T4CMIN in cool mode; T4DHWMAX, T4DHWMIN in DHW mode). Also, ensure that the water flow isn't too low by verifying that all shut-off valves are completely open, the water filter is clean, there's no air in the system, the water pressure is above 1 bar when cold, the expansion vessel isn't broken and the resistance in the water circuit isn't too high for the pump. Finally, check that the water volume in the installation is above the minimum required value.
  • D
    David NelsonAug 15, 2025
    What to do if CLIVET WSAN-YMi 31 Air Conditioner has space heating capacity shortage at low outdoor temperatures?
    • D
      ddavisAug 16, 2025
      If you're experiencing a space heating capacity shortage with your CLIVET Air Conditioner during low outdoor temperatures, it might be due to the backup heater not being activated. Check that the 'OTHER HEATING SOURCE/ BACKUP HEATER' is enabled and verify that the thermal protector of the backup heater hasn't been activated. Also, ensure the booster heater isn't running simultaneously with the backup heater. Another possible cause is too much heat pump capacity being used for heating domestic hot water. To resolve this, check that the 't_DHWHP_MAX' and 't_DHWHP_RESTRICT' are configured appropriately, disable the 'DHW PRIORITY' in the user interface, and enable the 'T4_TBH_ON' in the user interface/FOR SERVICEMAN to activate the booster heater for domestic water heating.
  • A
    antoniokingAug 19, 2025
    How to fix a CLIVET WSAN-YMi 31 Air Conditioner when the compressor isn't starting?
    • K
      Kayla FrankAug 19, 2025
      If the compressor of your CLIVET Air Conditioner isn't starting for space heating or domestic water heating, it could be because the unit is starting up outside of its operation range due to low water temperature. In this case, the system uses a backup heater to reach the minimum water temperature (12°C). Check that the backup heater power supply is correct, the thermal fuse is closed, the thermal protector isn't activated, and the contactors aren't broken.
  • T
    tpattersonAug 23, 2025
    Why is the pump in my CLIVET Air Conditioner making noise (cavitation)?
    • S
      Steven QuinnAug 25, 2025
      The pump in your CLIVET Air Conditioner might be making noise (cavitation) because there is air in the system. If so, purge the air. Alternatively, the water pressure at the pump inlet might be too low. Check that the water pressure is greater than 1 bar when the water is cold, ensure the manometer isn't broken, verify the expansion vessel isn't broken, and confirm the setting of the pre-pressure of the expansion vessel is correct.
  • M
    Marissa AndersonAug 27, 2025
    What to do if CLIVET Air Conditioner DHW mode can’t change to Heat mode immediately?
    • S
      Scott WhiteAug 27, 2025
      If your CLIVET Air Conditioner can't switch from DHW mode to Heat mode immediately, it could be due to several reasons. The heat exchanger for space heating might not be big enough, in this case set t_DHWHP_MAX to a minimum value (the suggested value is 60min), connect the circulating pump out of the unit to the unit if it is not already controlled by it, and add a 3-way valve at the inlet of the fan coil to ensure enough water flow. Alternatively, the space heating load might be small, in which case no heating is needed. Finally, if the disinfect function is enabled but without TBH, disable the disinfect function, and add TBH or AHS for DHW mode.
  • D
    Daniel BellAug 30, 2025
    Why does the water pressure relief valve open on my CLIVET Air Conditioner?
    • K
      Kimberly FloydAug 31, 2025
      The water pressure relief valve on your CLIVET Air Conditioner might open if the expansion vessel is broken, in which case you should replace it. Another reason could be that the filling water pressure in the installation is higher than 0.3MPa. Make sure that the filling water pressure in the installation is about 0.15~0.20MPa.
  • S
    Stephanie NelsonSep 3, 2025
    What to do if CLIVET WSAN-YMi 31 DHW mode heat pump stops but setpoint not reached, space heating require heat but unit stay in DHW mode?
    • S
      Stephen CarterSep 3, 2025
      If the CLIVET Air Conditioner's DHW mode heat pump stops working before reaching the setpoint, and the unit remains in DHW mode despite space heating being required, it could be because the surface of the coil in the tank isn't large enough. In this case set t_DHWHP_MAX to a minimum value (the suggested value is 60min), connect the circulating pump out of the unit to the unit if it is not already controlled by it, and add a 3-way valve at the inlet of the fan coil to ensure enough water flow. Also, it could be because TBH or AHS is not available. The heat pump will stay in DHW mode until t_DHWHP_MAX is reached or the setpoint is achieved. Add TBH or AHS for DHW mode, ensuring they are controlled by the unit.
  • D
    David ReyesSep 7, 2025
    What to do if the water pressure relief valve leaks in CLIVET WSAN-YMi 31 Air Conditioner?
    • H
      Heidi GreenSep 8, 2025
      If the water pressure relief valve on your CLIVET Air Conditioner is leaking, it may be due to dirt blocking the valve outlet. Check for correct operation of the pressure relief valve by turning the red knob on the valve counter clockWise. If you do not hear a clacking sound, contact your local dealer. In case the water keeps running out of the unit, close both the water inlet and outlet shut-off valves first and then contact your local dealer.

Summary

1 LINE

3 GENERAL INFORMATION

Antifreeze function

Unit's freeze prevention function using heat pump and backup heater.

Backup heater

Increases heating capacity and provides backup in case of malfunction.

Domestic hot water tank

Specifies requirements for connecting a domestic hot water tank, including probe and booster heater placement.

4 OPERATING CONDITIONS

COOLING mode

Details minimum leaving water flow temperature in cooling mode across various outdoor temperatures.

HEATING mode

Details maximum leaving water flow temperature in heating mode across various outdoor temperatures.

6 INSTALLATION

Handling

Provides guidelines for safely handling the unit due to its size and weight using lifting tools.

Select an installation site

Outlines criteria for choosing a suitable installation location, considering ventilation, noise, and safety.

Servicing space requirements

Specifies the necessary clearance around the unit for maintenance and access.

8 WATER CONNECTIONS

Water features

Lists water quality parameters crucial for preventing corrosion and ensuring optimal performance.

Water circuit anti-freeze protection

Details measures to prevent freezing, including glycol concentration and system insulation.

9 ELECTRICAL CONNECTIONS

Precautions on electrical wiring work

Advises on securing cables, avoiding contact with pipes, and using proper terminal connections.

Specifications of standard wiring components

Lists component specifications like maximum overcurrent protector and wiring size for different power supplies.

Connection terminal block

Illustrates terminal blocks and their connections for different unit sizes and configurations.

Room thermostat - Not supplied

Outlines three methods for connecting a thermostat, depending on the application.

10 START-UP AND CONFIGURATION

Climate related curves

Explains how to select climate-related curves for adjusting target outlet temperature based on outdoor conditions.

DIP switch settings overview - Function setting

Details the function of DIP switches for configuring heating sources and pump operation.

Pre-operation checks

Lists essential checks to perform before the initial start-up of the unit.

FOR SERVICEMAN

Introduces the installer-focused menu for configuring equipment and parameters.

About DHW mode

Explains the Domestic Hot Water mode, including its settings and parameters.

Cooling mode setting

Covers settings for cooling mode, including temperature ranges and ambient operating limits.

Heating mode

Details settings for heating mode, including temperature ranges and ambient operating limits.

Auto mode

Explains how to configure auto mode for automatic heating/cooling based on ambient temperature.

Room thermostat

Outlines how to set up and configure room thermostat functionality for precise temperature control.

Test run

Describes how to perform a test run to verify the correct operation of unit components.

Parameters relating to functions reserved for technicians.

Lists technical parameters and their default settings, ranges, and intervals.

11 SERVICE INFORMATION

Risk of fire; flammable materials

Highlights safety precautions related to flammable refrigerants and ignition sources.

Leak detection methods

Describes acceptable methods for detecting refrigerant leaks, including calibration and fluid usage.

Removal and evacuation

Details procedures for removing and evacuating refrigerant from the system safely.

12 MAINTENANCE

ELECTRIC SHOCK

Emphasizes crucial safety measures to prevent electrical shock during maintenance.

Use of glycol

Advises on documenting glycol concentration and pH, and managing low pH levels.

Disassembling the unit

Explains how to access the compressor, electrical parts, and hydraulic compartment by removing unit doors.

13 TROUBLE SHOOTING

General symptoms

Provides a table of common issues and corrective actions for unit malfunctions.

Error codes

Lists error codes displayed on the user interface and their corresponding failure causes and corrective actions.

15 ELECTRICAL SCHEMA

17 LAYOUT SCHEDE ELETTRONICHE

Main control board of hydraulic module

Shows the layout and connector assignments for the hydraulic module's main control board.

PCB B - Main control board 1-phase for 5;7;9 kW units

Depicts the layout of the main control board PCB B for 1-phase 5/7/9kW units.

18 MODBUS MAPPING TABLE

Mapping of registers in the wired controller

Lists Modbus register addresses, descriptions, and remarks for wired controller communication.

Running parameters

Provides a comprehensive table of unit parameters accessible via the wired controller, including their addresses and units.

19 CONTROLLER USER MANUAL

Meaning of icons

Explains the various icons used on the controller display for different functions and modes.

Menu structure

Provides a visual representation of the controller's menu navigation hierarchy.

Lock - unlock keyboard

Explains how to lock and unlock the controller's keypad to prevent unauthorized access.

On - Off

Details how to activate or deactivate the unit's heating, cooling, or DHW functions via the interface.

Ambient operating mode adjustment

Covers adjusting operating modes like HEAT, COOL, and AUTO via the interface or ambient thermostat.

Domestic hot water (DHW)

Introduces the DHW functions, including Disinfect, Fast DHW, Tank Heater, and DHW Pump.

Time schedule

Covers setting timers for various operations, including start/end times, modes, and temperatures.

Options

Lists available options in the menu, including Silent Mode, Holiday Away, Holiday Home, and Backup Heater.

20 CONTROLLER NAVIGATION MENU

Structure menu

Provides a hierarchical view of all menus and sub-menus within the controller.

CLIVET WSAN-YMi 31 Specifications

General IconGeneral
BrandCLIVET
ModelWSAN-YMi 31
CategoryAir Conditioner
LanguageEnglish

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