Daikin EHVH08S18CA User Manual download pdf (Page 9)

5 Maintenance and service

Operation manual

EHBH/X04+08+16CA + EHVH/X04+08S18CA + EHVH/X08S26CA +

EHVH/X16S18+26CA

Daikin Altherma - Low Temperature Split

4P313773-1B – 2012.11

▪ Use a weekly schedule for your normal domestic hot water needs

(only in scheduled mode).

▪ Program to heat up the DHW tank to a preset value (Storage

comfort = higher DHW tank temperature) during the night,

because then space heating demand is lower and electric tariffs

may be lower.

▪ If heating up the DHW tank once at night is not sufficient,

program to additionally heat up the DHW tank to a preset value

(Storage eco = lower DHW tank temperature) during the day.

▪ Make sure the desired DHW tank temperature is NOT too high.

Example: After installation, lower the DHW tank temperature daily

by 1°C and check if you still have enough hot water.

▪ Program to turn ON the domestic hot water pump only during

periods of the day when instant hot water is necessary. Example:

In the morning and evening.

5 Maintenance and service

5.1 Overview: Maintenance and service

The installer has to perform a yearly maintenance. You can find the

contact/helpdesk number via the user interface.

As end user, you have to:

▪ Keep the user interface clean with a soft damp cloth. Do NOT use

any detergents.

▪ Regularly check if the water pressure indicated on the manometer

is above 1 bar.

Refrigerant

This product contains fluorinated greenhouse gases covered by the

Kyoto Protocol. Do NOT vent gases into the atmosphere.

Refrigerant type: R410A

Global warming potential value: 1975

Periodical inspections for refrigerant leaks may be required

depending on the applicable legislation. Please contact your installer

for more information.

5.2 To find the contact/helpdesk number

Go to [6.3.2]: > Information > Error handling > Contact/helpdesk

number.

6 Troubleshooting

6.1 Symptom: You are feeling too cold (hot)

in your living room

Possible cause Corrective action

The desired room temperature is

too low (high).

Increase (decrease) the desired

room temperature.

If the problem recurs daily, do

one of the following:

▪ Increase (decrease) the room

temperature preset value.

▪ Adjust the room temperature

schedule.

Possible cause Corrective action

The desired room temperature

cannot be reached.

Increase the desired leaving

water temperature in accordance

with the heat emitter type.

6.2 Symptom: The water at the tap is too cold

Possible cause Corrective action

You ran out of domestic hot

water because of unusual high

consumption.

If you immediately need domestic

hot water, activate the DHW tank

booster mode. However, this

consumes extra energy.

If you can wait, overrule

(increase) the active or next

scheduled desired temperature

so that more hot water will be

produced exceptionally.

If the problems recurs daily, do

one of the following:

▪ Increase the DHW tank

temperature preset value.

▪ Adjust the DHW tank

temperature schedule.

Example: Program to

additionally heat up the

DHW tank to a preset value

(Storage eco = lower tank

temperature) during the day.

The desired DHW tank

temperature is too low.

7 Glossary

DHW = Domestic hot water

Hot water used, in any type of building, for domestic

purposes.

LWT = Leaving water temperature

Water temperature at the water outlet of the heat pump.

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Daikin EHVH08S18CA User Manual Page 9

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