Heat pump · Daitsu CDV 57 wired controller

How to use the Daitsu CDV 57 controller

The whole video, with what the official manual says: domestic hot water and underfloor heating, what each button does, and what you can safely change.

What you'll see, minute by minute

  • 0:00 — What the CDV 57 controller is
  • 0:16 — The controller's eight buttons
  • 0:32 — 4.1 · Switching between hot water and underfloor heating
  • 1:02 — 4.2 · Switching hot water on and off
  • 1:23 — 4.4 · Setting the hot-water temperature
  • 1:51 — 4.12 · Switching underfloor heating on and off
  • 2:11 — 4.13 · Setting the underfloor-heating temperature
  • 2:28 — 4.22 · Child lock
  • 3:00 — What we do at JSL
  • 3:19 — What we do not do
  • 3:31 — Maintenance and quotes
  • 4:01 — Help us with your comment

This is the CDV 57, and every controller is different

On other Daitsu controllers — the CDV-46, the CDV 59 Hydrobox, the WC5/WC6 — the buttons and the display are different. If yours doesn't look like the one in the video, get its own manual, or write to us and we'll tell you which one you have.

Everything said in the video

The Daitsu CDV 57 controller

This is the Daitsu CDV 57 wired controller. It controls your domestic hot water and underfloor heating.

The eight buttons

It has eight buttons in two rows. On top: ENTER CANCEL, TIMER, the up arrow and MODE.

Switching between hot water and underfloor heating

The first function in the manual is switching between hot water and underfloor heating. Use the WATER AC FLOOR button.

Switching hot water on and off

Second function: switching the hot water on and off. Use the ON OFF button.

Setting the hot-water temperature

Third function: setting the hot-water temperature. With hot water running, use the arrows.

Switching underfloor heating on and off

Fourth function: switching the underfloor heating on and off. This also uses ON OFF, but from the underfloor-heating screen.

Setting the underfloor-heating temperature

Fifth function: underfloor-heating temperature. Use the arrows again; each press changes it by one degree.

The child lock

And the last everyday function: the child lock, shown by the padlock.

You have the essentials

That is everything you need for everyday use. The other functions in the manual are installer settings and should be left to the technician.

Who we are

Before we finish, here is what we do at JSL Mallorca, in case you ever need us.

What we do

We install and repair heat pumps and underfloor heating, air conditioning, electrical systems and EV chargers, plumbing and water treatment, and solar panels.

What we do not do

And so there are no surprises, here is what we do not do: we do not provide emergency call-outs. We work by appointment so we can do the job properly, without rushing.

Maintenance

If you want your system to last and use less energy, an annual service is the sensible choice. We can take care of it for you.

Call us

Call us on plus thirty-four, six zero nine, zero nine, eight nine, zero two. Or six five six, eight two, seven nine, two five.

We are here

Write to info at jslmallorca dot com, or visit jslmallorca dot com. Quotes are free and with no obligation.

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Frequently asked questions

What we get asked most about this controller

How do I turn up the hot water temperature on the CDV 57?

From the domestic hot water menu on the controller itself, without touching the unit. The video shows it step by step with the display in front of you. If you turn it up and notice no difference, it usually means the cylinder is asking for more than the heat pump can give at that moment — not that the controller is faulty.

Can I go into the installer parameters?

You can get in, but you shouldn't change anything. That's where the heating curves and the heat pump protections live, and a badly configured machine works harder and fails sooner. What's yours are the modes, the temperature and the schedules.

There's a code on the display and I don't know what it means

We cover the CDV 57 error codes one by one in another video. The first thing to check is whether the unit is still running or has stopped: a warning and a lockout are not the same thing.

Will this work for my heat pump?

The CDV 57 is fitted to Daitsu heat pumps with domestic hot water and underfloor heating. We install and service them in Mallorca every day. If you don't know which controller you have, send us a photo of the display and we'll tell you.

JSL in Mallorca

Heat pumps across Mallorca

We install and service Daitsu heat pumps across Mallorca — Palma, Calvià, Llucmajor, Manacor, Campos, Felanitx, Marratxí, Santanyí and Andratx. If your unit isn't heating properly, keeps starting and stopping, or has thrown a code, we come out, look at it and tell you what it needs. We work by appointment; we don't do emergency call-outs.