Daikin homecontrols EKRSENDI1BA, Installer And User Manual

19

Troubleshooting

Troubleshooting

form a self-test (approx. 2 seconds). Afterwards, 

initialisation is carried out. The LED will light up 

orange and green to indicate that initialisation is 

complete. 

Attention!

 There is a risk of explosion if the battery 

is not replaced correctly. Replace only with the 

same or equivalent type. Never recharge non-

rechargeable batteries. Do not throw the batteries 

into  a  fire.  Do  not  expose  batteries  to  excessive 

heat. Do not short-circuit batteries. Doing so will 

present a risk of explosion.

Used batteries should not be disposed of with reg-

ular domestic waste! Instead, take them to your 

local battery disposal point.

7 

Troubleshooting

7.1 

Weak battery

Provided that the voltage value permits it, the accessory 

will remain ready for operation even if the battery voltage 

is low. Depending on the particular load, it may be possible 

to send transmissions again repeatedly, once the batteries 

have been allowed a brief recovery period.

If the voltage drops too far during transmission, the corre-

sponding flashing signal will appear on the accessory (see 

„7.3 Error codes and flashing sequences“ on page 20

). In 

this case, replace the empty batteries by two new batteries 

(see „6 Replacing batteries“ on page 17).

7.2 

Duty cycle 

The wireless DHC accessories operate in the following fre-

quency bands:

•  868,000~868,600 MHz

•  869,400~869,650 MHz

In order to safeguard operation of all devices working in this 

range, it is legally required to limit the transmission time of 

devices. Limiting the transmission time minimizes the risk 

of interference.

The ‘duty cycle’ is the maximum transmission time. It is 

the ratio of the time that a device is actively transmitting 

in comparison to the measurement period (1 hour), and is 

expressed as a percentage of 1 hour.

If the total amount of allowed transmission time is reached, 

the DHC accessory will stop transmitting until the time limit 

is reached. 

For example, when a device has a duty cycle limit of 1%, it 

is only allowed to transmit 36 seconds in 1 hour. After this, it 

will stop transmitting until the 1 hour limit is reached. 

DHC accessories fully comply to this limitation and use 2 

frequency bands with a duty cycle of respectively 1 % and 

10%.

During normal operation of the DHC accessories, this limit 

is not usually reached. However it is possible that the limit 

is reached during start-up or during a fresh installation of a