Daikin EGSQH10S18AA9W

Other manuals for Daikin EGSQH10S18AA9W

Service Manual168 pages

Installer's Reference Guide96 pages

Operation Manual12 pages

Installation Manual28 pages

Questions and Answers

M
Marcus GloverAug 12, 2025
What to do if the Daikin EGSQH10S18AA9W Heat Pump unit is NOT heating?
- D
  Darrell MerrittAug 12, 2025
  If your Daikin Heat Pump isn't heating, it could be due to several reasons. First, if the water temperature is too low, the unit uses a backup heater to reach 15°C. Ensure the power supply to the backup heater is correctly wired, the thermal protector isn't activated, and the contactors aren't broken. If the preferential kWh rate power supply settings and electrical connections do NOT match, check the connections. If the electricity company sent a preferential kWh rate signal, wait for the power to return (2 hours max.). If problems persist after these checks, consider contacting your dealer.
M
Michelle BartonAug 15, 2025
What to do if my Daikin EGSQH10S18AA9W fails?
- J
  Jamie LopezAug 16, 2025
  If your Daikin Heat Pump fails, first press the button to view a description of the problem, then press it again. Select the option to allow the backup heater to take over the heat load. Finally, call your local dealer to get the heat pump fixed.
A
Anna BirdAug 20, 2025
How to fix AH-error when tank disinfection function is NOT completed correctly in Daikin Heat Pump?
- W
  Wanda ThompsonAug 20, 2025
  If the tank disinfection function is not completed correctly (AH-error) on your Daikin Heat Pump, it could be due to a few reasons. The disinfection function might have been interrupted by domestic hot water tapping, so program the start-up when no domestic hot water tapping is expected for the next 4 hours. Also, if large domestic hot water tapping happened recently before the programmed start-up, program the start-up at least 4 hours later than the last expected large hot water tapping. Finally, ensure the disinfection operation wasn't stopped manually by not pressing the button while the function is active.
W
wadereneeAug 23, 2025
Why is the water at the tap too cold with my Daikin EGSQH10S18AA9W?
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  Mr. Robert Green DDSAug 23, 2025
  If the water at the tap is too cold, it might be due to unusually high consumption leading to depletion of domestic hot water. If you need hot water immediately, activate the DHW tank booster mode, keeping in mind that this consumes extra energy. Alternatively, you can overrule the active or next scheduled desired temperature to produce more hot water. If this issue occurs frequently, consider increasing the DHW tank temperature preset value or adjusting the DHW tank temperature schedule, for example, by programming the system to additionally heat up the DHW tank to a preset value during the day.
M
Michael SandersAug 27, 2025
Why does the pressure relief valve open on my Daikin Heat Pump?
- W
  williammitchellAug 27, 2025
  The pressure relief valve on your Daikin Heat Pump might open due to several reasons. Check the temperature setting on the remote controller to ensure it is correct. Low water or brine flow could also be the cause; ensure all shut-off valves are completely open, the water filter is clean, and there's no air in the system. Also, verify the water pressure is above 1 bar, the expansion vessel isn't broken, and the resistance in the water circuit isn't too high. Lastly, ensure the water volume in the installation is above the minimum required value. If the problem persists after these checks, consider contacting your dealer.
L
Lawrence FaulknerAug 31, 2025
What to do if my Daikin EGSQH10S18AA9W Heat Pump is making noise?
- W
  william94Aug 31, 2025
  If your Daikin Heat Pump pump is making noise, it could be due to air in the system. Purge air manually or use the automatic air purge function. Another cause might be low pressure at the pump inlet. Check that the pressure is above 1 bar, the manometer is not broken, the expansion vessel is not broken, and the pre-pressure setting of the expansion vessel is correct.
T
Timothy LopezSep 3, 2025
What to do if the pressure relief valve leaks in Daikin EGSQH10S18AA9W Heat Pump?
- S
  Samantha FrazierSep 3, 2025
  If the pressure relief valve on your Daikin Heat Pump is leaking, it might be due to dirt blocking the water pressure relief valve outlet. Check whether the pressure relief valve works correctly by turning the red knob on the valve counterclockwise. If you do NOT hear a clacking sound, contact your dealer. If the water or brine keeps running out of the unit, close both inlet and outlet shut-off valves first and then contact your dealer.
J
julie98Sep 7, 2025
How to adjust temperature on Daikin EGSQH10S18AA9W?
- J
  jenningsjoseSep 7, 2025
  If you are feeling too cold (hot) in your living room, it might be because the desired room temperature is too low (high). Increase (decrease) the desired room temperature. If the problem recurs daily, increase (decrease) the room temperature preset value or adjust the room temperature schedule. If the desired room temperature cannot be reached, increase the desired leaving water temperature in accordance with the heat emitter type.

Summary

General Safety Precautions

Documentation, Warnings, and User Guidance

Details about the document, warnings, symbols, and essential user advice.

Document and System Information

About This Document

Information on the document set and its purpose.

System Components Overview

Details system components and their typical layout.

System Operation - Overview and Interface

Introduction to Operation and User Interface

Introduces system operation and provides a glance at the user interface elements.

System Operation - Basic Usage and Controls

Basic Navigation, Home Pages, and Menu Structure

Explains daily navigation, home pages, menu structure, and ON/OFF controls.

Space Heating Control

Setting Operation Modes and Controlling Temperature

Covers setting operation modes and controlling temperatures for space heating.

Domestic Hot Water (DHW) Control

DHW Modes, Reheat, and Tank Operations

Details DHW modes, reheat, scheduled operations, and booster mode.

Advanced Operation Features

Holiday Mode and Information Access

Explains holiday mode, reading information, and settings like date/time.

Schedules, Presets, and Function Locks

Using Preset Values and Programming Schedules

Details defining preset values and programming schedules for controls.

Managing Button and Function Locks

Explains how to activate/deactivate child and function locks.

Schedule Examples and Programming

Programming and Copying Schedules

Guides on programming schedules and copying them between days.

Predefined Schedule Examples

Presents predefined schedules for room temp and leaving water.

Predefined Schedules: Specific Applications

Leaving Water Temperature (Additional)

Presents predefined schedules for the additional leaving water temperature.

DHW Tank Temperature Schedules

Shows predefined schedules for domestic hot water tank temperature.

Menu Structure Overview

Energy Saving Tips

Optimizing Room and Water Temperatures

Advice on optimizing room and leaving water temperatures for energy efficiency.

Maintenance, Service, and Troubleshooting

Maintenance, DHW Tips, and Error Checking

Covers general maintenance, DHW tips, and checking error history.

Troubleshooting Common Symptoms

Guides on resolving common issues like cold rooms or tap water.

System Management and Support

Heat Pump Failure and System Recovery

Guidance on addressing heat pump failure and backup heater operation.

Relocation, Disposal, and Glossary

Information on relocating, disposing, and understanding key terms.

Daikin EGSQH10S18AA9W Specifications

General

Model	EGSQH10S18AA9W
Category	Heat Pump
Manufacturer	Daikin
Heating Capacity (Rated)	3.2 kW
Voltage	230V
Indoor Unit Type	Wall-mounted
Operating Temperature Range (Heating)	-15°C to 24°C
Power Supply	1 Phase, 50 Hz
Refrigerant	R32
Energy Efficiency Class (Heating)	A++
Operating Temperature Range (Cooling)	-10 to 46 °C
Outdoor Unit Type	Single Outdoor Unit