W
ARRANTY
&
SUPPORT
UNIT MAINTENANCE &
SER
VICE GUIDE
P32 OF 34
P31 OF 34
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...
DIAGONSIS CODE, POSSIBLE CLAUSES, AND SUGGESTED ACTIONS TO
USER AND TECHNICIAN
DIAGNOSIS CODE & TROUBLE-SHOOTING GUIDELINE
Codes
Descriptions
Possible Reasons
Suggestion to User
Technician Trouble-Shooting
E1
Condensate Full in drain pan
Dain pan dirty, drain hose
clogging, water level switch
failure, loose connection,
bad control board/
components, etc.
Check if drain hose is
clogged; if not, need to call
your installing or service
technician.
E2
Indoor air temp. sensor failure
Bad temperature sensor;
loose connection, damaged
wires, bad control board/
components, etc.
E3
Indoor coil copper tube
sensor failure
Bad temperature sensor;
loose connection, damaged
wires, bad control board/
components, etc.
Lift up grille/cover, to check
if the sensor looks bad or
drops out of holding socket/
pocket; or, to call installing
or service technician.
E4
Abnormal cooling
E5
Abnormal heating
Dirty filters/coils, refrigerant
leaks over time, pipe too
long, kinks or clogging in
pipe line or valves, pipe
damage, sensor failure,
compressor or board or
other component failures,
etc.
1) Regularly check and
clean indoor unit filters,
indoor and outdoor coils.
2) The service valves at
outdoor unit should be
generally cool at cooling
mode, hot at heating
mode;
3) Call your installing or
service technician to
check unit.
E6
Cooling-outdoor coil low
temp. protection
Outdoor too cold to run
cooling mode, windy, too
much refrigerant, short
piping, etc.
E7
Cooling-Indoor coil anti-
freeze protection
Dirty filter/coils, indoor fan
motor failure, loose blower
wheel/motor connection, too
much or less refrigerant,
pipe/cap. tube/valve
clogging, etc.
E8
Heating-outdoor coil high
temp. protection
Outdoor temperature too
warm to run heating mode,
too much refrigerant, short
piping, etc.
E9
Heating-indoor coil anti-to
hot protection
Dirty filter/coils, indoor fan
motor failure, loose blower
wheel/motor connection, too
much refrigerant, pipe/cap.
tube/valve clogging, etc.
E0
Heating-outdoor coil too
cold protection
Outdoor temperature is too
cold to run heat pump/
heating.
1) Shut off the unit;
2) Cooling, wait until
weather allows the unit
to re-start, or switch to
alternative cooling
equipment which allows
lower ambient cooling;
3) Heating, wait until
weather allows the unit
to re-start, or switch to
base-board heater, gas
furnace or other
alternative heating
sources during cold
hours/days.
1) Check if these are
caused by installation or
component failure;
2) There could be nothing
abnormal, but the unit is
at protection mode, which
means the current
ambient temperature is
not proper to run the unit;
3) If there is something
wrong, need to find all
the clauses and correct
or fix the problems and
not to leave any bugs.
1) Shut off power;
2) Follow possible clauses
listed at the left, to check
one by one;
3) To save time for quick
diagnosis as much as
posible, suggest your
technician to make
appointment with YMGI
tech. support, and call us
while the techician is at
job site.
4) Better to check the unit,
get problems and model
model #, and serial #
ready, before calling
YMGI tech. support.
5) Need the technician
physically, at the job site,
use right tools and
experience, to find all the
clauses and correct or fix
the problems and not to
leave any bugs.
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
