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English
<Symptom>
The fans rotates after 1 minutes when pressing on on/off but-
ton.
<Cause>
This indicates that the operation is in preparation.
Wait for about 1 minute.
• Operation stops sometimes.
<Symptom>
“U5” is displayed on the remote controller and the operation
stops but then restarts after a few minutes.
<Cause>
This indicates that the remote controller is intercepting noise
from electrical appliances other than the HRV unit, and this
prevents communication between the units, causing them to
stop.
Operation automatically restarts when the noise goes away.
• “88” 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 some-
thing 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 operation
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
OPERATION lamp flash and the “MALFUNCTION
CODE” appears.
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.
List of malfunction codes of Remote controller of the HRV-sys-
tem
Switch
ON
OFF
Trip position
Breaker
Opera-
tion
lamp
Inspec
tion
indica-
tor
Unit
No.
Mal-
func-
tion
code
Description
On
Off
Blink-
ing
64
Indoor air thermistor mal-
function
On
Off
Blink-
ing
65
Outdoor air thermistor mal-
function
On
Off
Blink-
ing
6A
Dumper-related malfunction
Blink-
ing
Blink-
ing
Blink-
ing
6A
Dumper-related malfunction
+ thermistor malfunction
Blink-
ing
Blink-
ing
Blink-
ing
A1
Printed circuit board fault
On
Off
Blink-
ing
A1
Printed circuit board fault
Blink-
ing
Blink-
ing
Blink-
ing
A9
Electric expansion valve
drive error
Blink-
ing
Blink-
ing
Blink-
ing
C4
Liquid piping thermistor error
(faulty connection, discon-
nection short circuit, fault)
Blink-
ing
Blink-
ing
Blink-
ing
C5
Gas piping thermistor error
(faulty connection, cut wire,
short circuit, fault)
Blink-
ing
Blink-
ing
Blink-
ing
C9
Intake air into coil thermistor error
(faulty connection, disconnection,
short circuit, fault)
Blink-
ing
Blink-
ing
Blink-
ing
U3
Test run not performed
Blink-
ing
Blink-
ing
Blink-
ing
U5
Transmission error between
the unit and remote controller
Off
Blink-
ing
Off
U5
Setting error of remote con-
troller
Off
Blink-
ing
Off
U8
Transmission error between
main remote controller and
sub remote controller
Off
Blink-
ing
Blink-
ing
UA
Incorrect combination with
indoor unit and remote controller.
On
Blink-
ing
On
UC
Central control address over
lapping
Blink-
ing
Blink-
ing
Blink-
ing
UE
Transmission error between
the unit and centralized con-
troller
INSPECTION
display
MALFUNCTION CODE
INDOOR UNIT No. in which
a malfunction occurs
OPERATION lamp
01_EN_3P130767-3G.fm Page 13 Monday, March 5, 2007 10:05 AM