User`s manual

English 10
• 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
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 any of 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 condition-
ers or outdoor units for details.
5-2 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 follow-
ing 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.
4. It dries usually in winter.
• Is the water supply service valve open?
Open the water supply service valve.
• Have you lowered setting on the humidistat (locally pro-
cured) too far?
Correct the setting.
5-3 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.
2. Humidifies very little or not at all.
• Is there water in the water supply tank?
1 Is water being supplied?
Inspect the water supply pipes and supply the water.
2 Is the strainer clogged?
Clean the strainer.
3 Is the solenoid valve broken (i.e. won’t open)?
Replace the solenoid valve.
4 Is the humidifier element torn?
Replace.
5 Has the water resistance of the humidifier element
dropped?
Replace the humidifier element.
6 Are the control circuits broken?
Replace the printed circuit board and other electric parts.
• Is the float switch broken?
Replace the float switch.
• Is the water supply pressure sufficient?
Re-set it so that there is sufficient pressure.
• Is there foreign matter in the feed water tank?
Clean the feed water tank.
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
UNIT No.
H
INSPECTION
display
MALFUNCTION CODE
INDOOR UNIT No. in which
a malfunction occurs
OPERATION lamp
3P130767-1_En.fm Page 10 Wednesday, December 17, 2003 7:39 PM