Fujitsu ASU7RLF1 Service Bulletin

FUJITSU GENERAL AMERICA, INC
353 Route West. Fairfield, NJ 07004
Ph: 973-575-0381 Fx: 973-836-0449
Em: ServiceHVAC@fujitsugeneral.com
PROBLEM Low Load Cooling / Heating Function Setting
SOLUTION Updated Firmware – Replacement Indoor Control Boards
MODEL:
ASU7RLF1, ASU9RLF1, ASU12RLF1,
ASU9RL2, ASU12RL2, ASU9RLS2, ASU12RLS2,
ASU18RLF, ASU24RLF, AUU7RLF, AUU9RLF,
AUU12RLF, AUU18RLF, ARU7RLF, ARU9RLF,
ARU12RLF, ARU18RLF, ARU24RLF, AGU9RLF,
AGU12RLF, AGU15RLF
Objective:
As a result of several case studies it has become apparent that homes with high levels of insulation require a different capacity control
algorithm in order to improve occupant comfort, and improve energy efficiency. This firmware update provides the contractor with the
ability to select between standard insulation and high insulation level home settings. The above mentioned models can be retrofitted
with a replacement board. Should you want the new firmware, reference the serial number list on the attached table, look for your model
and serial number to see if your unit already has the firmware update. If your unit is not on the list then the firmware is already installed
from factory and you can simply set the following function setting as needed. If your unit is on this list you will need to place an order for
a replacement board, which will be covered under our standard 5 year parts warranty, and conduct the following settings.
Model
ASU7RLF1 MWA00000 - MWA19379
ASU9RLF1 MXA00000 - MXA026182
ASU12RLF1 MYA000000 - MYA026820
ASU9RL2 EYA000000 - EYA007211
ASU12RL2 EYA000000 - EYA012671
ASU9RLS2 JQA000000 - JQA020146
ASU12RLS2 JRA000000 - JRA033554
ASU15RLS2 JSA000000 - JSA034491
ASU18RLF KSA000000 - KSA051177
ASU24RLF KTA000000 - KTA033603
AUU7RLF MVA000000 - MVA001421
AUU9RLF KUA000000 - KUA009021
AUU12RLF KVA000000 - KVA007667
AUU18RLF KWA000000 - KWA005975
ARU7RLF MUA000000 - MUA001442
ARU9RLF KYA000000 - KYA005911
ARU12RLF LNA000000 - LNA 007370
ARU18RLF LPA000000 - LPA007561
ARU24RLF LQA000000 - LQA003592
Function Number
Room Temperature Sensor Control:
•Depending on the installed environment, correction of the room temperature sensor may be required.
•Select the appropriate control setting according to the installed environment.
•The temperature correction values show the difference from the standard setting "00" (manufacturer's recommended value).
Page 1 of 2
Serial Range
95
Production Serial Numbers:
Reference Table Below
Part Number
K9709427354
K9709427330
K9709427347
K9709170298
K9709170304
K9708713410
K9708713427
K9708713434
K9708540368
K9708540375
K9709928011
K9709928028
K9709928035
K9709928042
K9709928059
K9709928066
K9709928073
K9709928080
K9709928097
Setting Value
00
01
SERVICE BULLETIN
Number: 0030
Date: 9/25/14
TYPE: Field
Board Identification
K12JY-1402HSE-C1
K12JY-1402HSE-C1
K12JY-1401HSE-C1
K11CN-1403HSE-C1
K11CN-1404HSE-C1
K10CH-1401HSE-C1
K10CH-1402HSE-C1
K10CH-1403HSE-C1
K09DR-1403HSE-C1
K09DR-1404HSE-C1
K06AK-1400HSE-C1
K06AK-1401HSE-C1
K06AK-1402HSE-C1
K06AK-1403HSE-C1
K06AK-1404HSE-C1
K06AK-1405HSE-C1
K06AK-1406HSE-C1
K06AK-1407HSE-C1
K06AK-1408HSE-C1
( ◆ ... Factory Setting)
Setting Description
Standard insulation
◆
High insulation