Daikin HXHD125A7V1B - User Manual

Questions and Answers

T
Tracy FranklinAug 10, 2025
Why is my Daikin HXHD125A7V1B not heating properly?
- L
  Leslie Thomas DDSAug 10, 2025
  If your Daikin Heating System is turned on but not heating as expected, possible causes include: incorrect temperature setting (check the controller set point); low water flow (ensure all shut-off valves are open, clean the water filter if needed, purge air from the system, check for sufficient water pressure, and verify the expansion vessel is not broken); insufficient water volume (ensure it's above the minimum required value); or capacity shortage (check the cooling fan and ensure the unit isn't in a location that is too hot, >30°C).
N
Natasha BranchAug 14, 2025
What to do if my Daikin Heating System shows error code AE?
- X
  xstephensAug 14, 2025
  If your Daikin Heating System displays error code AE, it indicates a water system warning due to low flow. To resolve this: * Check the filter. * Ensure all valves are open.
M
Matthew SmithAug 20, 2025
How to fix Daikin Heating System error code A6?
- J
  Jessica StokesAug 20, 2025
  If your Daikin Heating System displays error code A6, it indicates a malfunction of the pump in the water circuit. Make sure water flow is possible by opening all valves in the circuit. Also, force clean water through the unit.
M
Melissa ReyesAug 25, 2025
Why does the water pressure relief valve open on my Daikin HXHD125A7V1B Heating System?
- T
  Tom MillerAug 26, 2025
  If the water pressure relief valve of your Daikin Heating System opens, it could be due to a broken expansion vessel (replace it) or the water volume in the installation being too high (ensure it is under the maximum allowed value).
M
Michael MorrisonAug 30, 2025
What to do if the water pressure relief valve leaks in my Daikin Heating System?
- H
  hsullivanAug 30, 2025
  If the water pressure relief valve of your Daikin Heating System is leaking, it may be due to dirt blocking the outlet. Check the pressure relief valve by turning the red knob counter-clockwise. If you don't hear a clacking sound, or if water continues to run out, close both the water inlet and outlet shut-off valves.
L
Lisa BrownSep 4, 2025
Why does my Daikin HXHD125A7V1B display "nnnn" when I press certain buttons?
- T
  taylorkristinSep 4, 2025
  If the user interface of your Daikin Heating System displays "nnnn" when pressing certain buttons, the current permission level may be preventing the use of that button. Change the "user permission level" field setting [0-00].