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• "
" is displayed on the remote controller.
<Symptom>
It displays immediately after the power is turned on, and dis-
appears after several seconds.
<Cause>
This indicates that the unit is checking whether or not the
remote controller is normal.
It is only displayed temporarily.
5-2
IF ONE OF THE FOLLOWING MALFUNCTIONS
OCCURS, TAKE THE MEASURES SHOWN
BELOW AND CONTACT YOUR DAIKIN DEALER
The system must be repaired by a qualified service person.
DO NOT CHECK AND REPAIR OPENING INSIDE THE UNIT
BY YOURSELF.
WARNING
When the HRV is in abnormal conditions (smell of
something burning, etc), cut off the power, and contact
your dealer.
Continued operation under such circumstances may result
in a failure, electric shock, and fire.
• The unit does not operate at all.
a. Check if there is a power failure.
Measure: After power has been restored, start opera-
tion again.
b. Check if the fuse has blown.
Measure: Turn the power off.
c. Check if breaker has worked.
Measure:
Turn the power on with the
breaker switch in the off
position.
Do not turn the power on
with the breaker switch in
the trip position.
(Contact your dealer.)
• If a safety device such as a fuse, a breaker, or an earth
leakage breaker frequency actuates, or ON/OFF switch
does not properly work.
Measure: Do not turn the power on.
• The remote control buttons do not work well.
Measure: Turn off the main power switch.
• If the display "
" (INSPECTION), "UNIT No." and the
T
OPERATION lamp flash and the "MALFUNCTION
CODE" appears.
UNIT No.
INSPECTION
display
MALFUNCTION CODE
Measure: Notify and inform the model name and what the
malfunction code indicates to your Daikin dealer.
• There are other malfunctions.
Measure: Stop the unit.
9
ON
Switch
Trip position
Breaker
OFF
OPERATION lamp
INDOOR UNIT No. in which
a malfunction occurs
List of malfunction codes of Remote controller of the HRV-system
Inspec-
Opera-
tion
Unit
func-
tion
indica-
No.
lamp
tor
code
On
Off
Blinking
On
Off
Blinking
On
Off
Blinking
Blinking Blinking Blinking
Blinking Blinking Blinking
Off
Blinking
Off
Off
Blinking
Off
Off
Blinking Blinking
On
Blinking
On
Blinking Blinking Blinking
In case of the malfunction with the code in white letters
on the black background in the unit still operates.
However, be sure to have it inspected and repaired and
as soon as possible.
If other than the above error codes are displayed, there
is a possibility that the problem in question has occurred
with a combined air conditioner or outdoor unit. See the
operation manuals included with the air conditioners or
outdoor units for details.
5-3
IF THE SYSTEM DOES NOT PROPERLY
OPERATE EXCEPT FOR THE ABOVE
MENTIONED CASE, AND NONE OF THE
ABOVE MENTIONED MALFUNCTIONS IS
EVIDENT, INVESTIGATE THE SYSTEM
ACCORDING TO THE FOLLOWING
PROCEDURES.
1. The unit does not operate at all.
• Check if there is a power failure.
After power has been restored, start operation again.
• Check if the fuse has blown or breaker has worked.
Change the fuse or set the breaker.
2. Amount of discharged air is small and the discharging
sound is high.
• Check if the air filter and heat exchange element are
clogged.
Clean tha air filter and heat exchange element.
3. Amount of discharged air is large and so is the sound.
• Check if the air filter and heat exchange element are not
installed.
Install the air filter and heat exchange element.
5-4
The following malfunctions must be cheched
by a qualified service person
1. Do not operate
• Are there any problems with the power or wiring?
Inspect the power and wiring.
• Are there any problems with the fan unit?
Inspect the fan motor and fan.
Mal-
Description
tion
Indoor air thermistor malfunc-
64
tion
Outdoor air thermistor mal-
65
function
6A
Dumper-related malfunction
Dumper-related malfunction +
6A
thermistor malfunction
Transmission error between
U5
the unit and remote controller
Setting error of remote con-
U5
troller
Transmission error between
U8
main remote controller and
sub remote controller
Incorrect combination with
UA
indoor unit and remote con-
troller.
Central control address over
UC
lapping
Transmission error between the
UE
unit and centralized controller
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