MAINTENANCE &
TROUBLE-SHOOTING
MAINTENANCE &
TROUBLE-SHOOTING
P31 OF 34
P32 OF 34
Compressor operates
Air exhaust protection frequency limit
Air exhaust protection frequncy limit
Compressor high pressure protection
unit stop
Cooling overload frequncy reducing
Cooling overload frequncy limit
Air exhaust protection unit stop
Over current protection frequency limit
Over current protection frequency
reducing
Communication malfunction unit stop
(Include indoor unit and driver)
Phase current protection frequncy
reducing
Phase current protection frequncy limit
IPM modular protection unit stop
Heating A unit anti-high temperature
frequncy reducing
Heating A unit anti-high temperature
frequncy limit
Over current protection unit stop
Heating B unit anti-high temperature
frequncy reducing
Heating B unit anti-high temperature
frequncy limit
Cooling overload unit stop
Heating C unit anti-high temperature
frequncy reducing
Heating C unit anti-high temperature
frequncy limit
Each indoor unit starts heating at same time
anti-high temperature protection unit stop
Heating D unit anti-high temperature
frequncy reducing
Heating D unit anti-high temperature
frequncy limit
Each indoor unit anti-freezing protection
at same time unit stop
Defrosting
Oil return
Outdoor unit temp. sensor malfunction or each
indoor unit temp. sensor malfunction unit stop
Compressor overload protection unit
stop
Compressor low-pressure protection
unit stop (preserved)
Phase current protection unit stop
E2 PROM Error unit stop
DC power supply short circuit
D101
D102
D103
D104
D105
D106
D107
D108
D109
Blink
once
Blink
once
Twice
Twice
Three
times
Three
times
Blink
once
Twice
Three
times
Four
times
Five
times
Six
times
Seven
times
Eight
times
Nine
times
Ten
times
Eleven
times
Twelve
times
Thirteen
times
Fourteen
times
Fifteen
times
A unit communication malfunction
(cannot receive correct data within 3mins.)
B unit communication malfunction
(cannot receive correct data within 3mins.)
A unit indoor middle temp. sensor
malfunction
B unit indoor middle temp. sensor
malfunction
A unit indoor outlet pipe temp. sensor
malfunction
B unit indoor outlet pipe temp. sensor
malfunction
A unit indoor inlet pipe temp.
sensor malfunction
B unit indoor inlet pipe temp.
sensor malfunction
A unit indoor ambient temp.
sensor malfunction
B unit indoor ambient temp.
sensor malfunction
A unit modes conflict
B unit modes conflict
A unit anti-freezing protection
B unit anti-freezing protection
A unit anti-high temp. protection
B unit anti-high temp. protection
Outdoor ambient temp. sensor
malfunction
Outdoor tube temp. sensor malfunction
Outdoor air exhaust temp. sensor
malfunction
Communication malfunction with driver (cannot
receive correct data from driver within 10s)
C unit communication malfunction
(cannot receive correct data within 3mins.)
D unit communication malfunction
(cannot receive correct data within 3mins.)
Received communication data proof
test correct will flash once
C unit indoor middle temp. sensor
malfunction
D unit indoor middle temp. sensor
malfunction
C unit indoor outlet pipe temp. sensor
malfunction
D unit indoor outlet pipe temp. sensor
malfunction
C unit indoor inlet pipe temp.
sensor malfunction
D unit indoor inlet pipe temp.
sensor malfunction
C unit indoor ambient temp.
sensor malfunction
D unit indoor ambient temp.
sensor malfunction
C unit modes conflict
D unit modes conflict
C unit anti-freezing protection
C unit anti-high temp. protection
D unit anti-freezing protection
D unit anti-high temp. protection
Four
times
Five
times
Six
times
Seven
times
Eight
times
Nine
times
Four
times
Five
times
Six
times
Seven
times
Eight
times
Nine
times
Blink
once
Blink
once
Blink
once
Twice
Twice
Twice
Three
times
Three
times
Three
times
Four
times
Four
times
Four
times
Five
times
Six
times
Seven
times
Eight
times
Five
times
Six
times
Seven
times
Eight
times
Blink
once
Blink
once
Blink
once
Twice
Twice
Three
times
Three
times
Four
times
Four
times
Five
times
Six
times
Seven
times
Eight
times
Five
times
Six
times
Seven
times
Eight
times
Meaning
Meaning
Meaning
Meaning
Meaning
Meaning
Meaning
Meaning
Meaning
FAULT INDICATION
MAINTENANCE
Use proper instruments for the refrigerant R410A.
Do not use any refrigerant other than R410A.
Do not clean the unit using mineral oil.
WARRANTY AND TECH. SUPPORT
YMGI warrants to the purchaser/owner(s) that YMGI products be free from defects in material and
workmanship under the normal use and maintenance, with the standard Limited Product Warranty
Policies that comes with the unit or sales package.
YMGI IS NOT RESPONSIBLE FOR
CONTACT FOR FIELD SERVICE OR REPAIR
The following people, in a prioritized sequence, will take care of your request or issue:
1) The original installer; otherwise,
2) Your current service contractor; otherwise,
3) Authorized contractor in YMGI list that is close to you; otherwise,
4) Authorized Distributor in YMGI Distributor list; otherwise,
5) Contractor/Distributor you prefer who is close to you.
CONTACT FOR GENERAL TECHNICAL QUESTIONS OR SUPPORT, IN A SEQUENCE:
1) The original installer; otherwise,
2) The current service contractor; otherwise,
3) The distributor; where the unit is purchased from otherwise,
4) YMGI Technical Support:
Tel: (866) 833-3138*703 Email: [email protected]
* Regular equipment maintenance or field service or field inspection.
* Damage or repairs required as a consequence Customer do-it-yoursely(DIY) installation and/or any other faulty
installation or improper application.
* Failure to start due to voltage conditions, blown fuses, open circuit breakers, or other damages due to the
inadequacy or interruption of electrical service.
* Damage or repairs needed as a consequence of any misapplication, abuse, improper servicing, unauthorized
alteration, or improper operation.
* Damage as a result of floods, winds, fires, lightening, accidents, corrosive atmosphere, or other conditions
beyond the control of YMGI.
* Parts not supplied or designated by YMGI.
* Products installed outside USA or Canada.
* Any damages to person or property of whatever kind, direct or indirect, special or consequential, whether
resulting from use or loss of use of the product.
The original licensed installer or current service contractor should be contacted first of all, since they installed
the unit and/or know more details than anybody else.
They will check the unit and find out the problems with the professional knowledge about HVAC and electric
product installation by using special tools or instrument.
They can contact YMGI technical support for technical help during unit installation or inspection.
Product model and serial numbers needed, which can be found on unit nameplate sticker, so that our
technician can quickly identify the unit, parts and wiring diagrams, among our many products and models.
* Any problems due to improper cooling and heating load calcuation of the room/building the air conditioner/heat
pump system is to be installed. Equipment users can get the calculation schedule from your room/building
architect or your installation or related service HVAC contractor, who should have knowledge and tools to do
these calculation correctly.
* Any problems due to improper sizing and selecting air conditioner/heat pump system. These equipment sizing
and selection work should be conducted by either your room/building architect or your installation or related
service HVAC contractor, who should have knowledge and tools to do these calculation correctly, and get your
approval, before your purchasing these air conditioner or heat pump equipment.
* Any problems due to improper installing of the air conditioner/heat pump system. Installation should be
conducted by currently licensed HVAC technician, following manufacturer installation instructions, all governing
safety codes, with care and professionalism.
* Any problems due to improper operation of the air conditioner/heat pump system. Users shall keep the manual
and look up in the manuals for the correct understanding how the unit will work and how to operate the unit
correctly.
* Any problems due to improper maintenance of the air conditioner/heat pump system. Like a car, regular
maintenance or yearly checking is necessary for the unit to work properly for you, before the season comes. For
example, air filter shall be checked for cleaness from time to time. Remote control batteries shall be checked for
enough power, before judging the unit is not working...
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
