Ecoer EAHAEC-36 User manual

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SDi Decades Extreme Service Manual
Inverter Ducted Split
3&5 Ton R-410A Heat Pump
All phases of this installation must comply with National, State and Local Codes.
IMPORTANT
These instructions do not cover all variations in systems or provide for every possible contingency
to be met in connection with installing and servicing. Should further information be desired or
should particular problems arise which are not covered sufficiently for the purchaser’s purposes,
the matter should be referred to local distributor.

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Contents
1. Safety Precautions----------------------------------------------------------------------
1.1 Precautions-------------------------------------------------------------------------------------------
1.2 Information servicing------------------------------------------------------------------------------
2. Model Reference & External Appearance--------------------------------------
2.1 Model Reference-----------------------------------------------------------------------------------
2.2 External Appearance-------------------------------------------------------------------------------
3. Indoor Unit-----------------------------------------------------------------------------------
3.1 Indoor Unit - Air Handler Type------------------------------------------------------------------
4. Outdoor Unit---------------------------------------------------------------------------------
4.1 Dimensional Drawings----------------------------------------------------------------------------
4.2 Service Space---------------------------------------------------------------------------------------
4.3 Capacity Correction Factor for Height Difference------------------------------------------
4.4 Noise Criterion Curves-----------------------------------------------------------------------------
4.5 Refrigerant Cycle Diagrams----------------------------------------------------------------------
4.6 Electrical Wiring Diagrams-----------------------------------------------------------------------
5. Installation--------------------------------------------------------------------------------
6. Maintenance-----------------------------------------------------------------------------
7. Product Features------------------------------------------------------------------------
8. Troubleshooting------------------------------------------------------------------------
8.1 Safety Caution--------------------------------------------------------------------------------------
8.2 General Troubleshooting--------------------------------------------------------------------------
8.3 Outdoor Unit Point Check Function------------------------------------------------------------
8.4 Information Inquiry---------------------------------------------------------------------------------
8.5 Error Diagnosis and Troubleshooting Without Error Code--------------------------------
8.6 Quick Maintenance by Error Code------------------------------------------------------------
8.7 Troubleshooting by Error Code------------------------------------------------------------------
8.8 Check Procedures----------------------------------------------------------------------------------
4
4
5
10
10
10
11
11
24
24
25
26
27
28
29
36
60
67
77
77
78
81
83
87
93
95
125

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9. Indoor Unit Disassembly---------------------------------------------------------------
9.1 Indoor Unit - Air Handler Type-------------------------------------------------------------------
130
130
138
151
152
153
154
10. Outdoor Unit Disassembly-----------------------------------------------------------
11. Appendix-----------------------------------------------------------------------------------
i) Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (℃ – K)-----
ii) Temperature Sensor Resistance Value Table for TP(for some units) (℃ – K)---
iii) Pressure On Service Port-----------------------------------------------------------------------

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CAUTION
Clean and ventilate the unit at regular intervals when operating it near a stove or near similar devices.
Do not use the unit during severe weather conditions. If possible, remove the product from the
window before such occurrences.
1.1 Precautions
To prevent personal injury, or property or unit damage, adhere to all precautionary measures and instructions outlined
in this manual. Before servicing a unit, refer to this service manual and its relevant sections.
Failure to adhere to all precautionary measures listed in this section may result in personal injury, damage to the unit
or to property, or in extreme cases, death.
WARNING indicates a potentially hazardous situation which if not avoided could result in serious personal
injury, or death.
CAUTION indicates a potentially hazardous situation which if not avoided could result in minor or moderate
personal injury, or unit damage.
WARNING
If a gas leak is suspected, immediately turn off the gas and ventilate the area if a gas leak is
suspected before turning the unit on.
If strange sounds or smoke is detected from the unit, turn the breaker off and disconnect the power
supply cable.
If the unit comes into contact with liquid, contact an authorized service center.
If liquid from the batteries makes contact with skin or clothing, immediately rinse or wash the area well
with clean water.
Do not insert hands or other objects into the air inlet or outlet while the unit is plugged in.
Do not operate the unit with wet hands.
Do not use a remote controller that has previously been exposed to battery damage or battery leakage.
1.1.2 Pre-Installation and Installation
WARNING
Use this unit only on a dedicated circuit.
Damage to the installation area could cause the unit to fall, potentially resulting in personal injury,
prop- erty damage, or product failure.
Only qualified personnel should disassemble, install, remove, or repair the unit.
Only a qualified electrician should perform electrical work. For more information, contact your dealer,
seller, or an authorized service center.
CAUTION
While unpacking be careful of sharp edges around the unit as well as the edges of the fins on the
con- denser and evaporator.
1.1.3 Operation and Maintenance
1.1.1 In case of Accidents or Emergency
1. Safety Precautuions
WARNING
Do not use defective or under-rated circuit breakers.
Ensure the unit is properly grounded and that a dedicated circuit and breaker are installed.
Do not modify or extend the power cable. Ensure the power cable is secure and not damaged
during operation.
Do not unplug the power supply plug during operation.
Do not store or use flammable materials near the unit.

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WARNING
Do not open the inlet grill of the unit during operation.
Do not touch the electrostatic filter if the unit is equipped with one.
Do not block the inlet or outlet of air flow to the unit.
Do not use harsh detergents, solvents, or similar items to clean the unit. Use a soft cloth for cleaning.
Do not touch the metal parts of the unit when removing the air filter as they are very sharp.
Do not step on or place anything on the unit or outdoor units.
Do not drink water drained from the unit
Avoid direct skin contact with water drained from the unit.
CAUTION
Do not install or operate the unit for an extended period of time in areas of high humidity or in an
environment directly exposing it to sea wind or salt spray.
Do not install the unit on a defective or damaged installation stand, or in an unsecure location.
Ensure the unit is installed at a level position
Do not install the unit where noise or air discharge created by the outdoor unit will negatively impact the
environment or nearby residences.
Do not expose skin directly to the air discharged by the unit for prolonged periods of time.
Ensure the unit operates in areas water or other liquids.
Ensure the drain hose is installed correctly to ensure proper water drainage.
When lifting or transporting the unit, it is recommended that two or more people are used for this task.
When the unit is not to be used for an extended time, disconnect the power supply or turn off the breaker.
1.2 Information servicing(For flammable materials)
1.2.1 Checks to the area
• Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to
ensure that the risk of ignition is minimized.
• For repair to the refrigerating system, the following precautions shall be complied with prior to conducting
work on the system.
1.2.2 Work procedure
• Work shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or
vapour being present while the work is being performed.
1.2.3 Work procedure
• All maintenance staff and others working in the local area shall be instructed on the nature of work being
carried out.
• Work in confined spaces shall be avoided.
• The area around the work space shall be sectioned off. Ensure that the conditions within the area have
been made safe by control of flammable material.
1.2.4 Checking for presence of refrigerant
• The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the
technician is aware of potentially flammable atmospheres.
• Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants.
1.2.5 Presence of fire extinguisher
• If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate
fire extinguishing equipment shall be available to hand.
• Have a dry powder or CO2 fire extinguisher adjacent to the charging area.

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1.2.6 No ignition sources
• No person carrying out work in relation to a refrigeration system which involves exposing any pipe work that
contains or has contained flammable refrigerant shall use any sources of ignition in such a manner that it may
lead to the risk of fire or explosion.
• All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of
installation, repairing, removing and disposal, during which flammable refrigerant can possibly be released to
the surrounding space.
• Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no
flammable hazards or ignition risks.
• NO SMOKING signs shall be displayed.
1.2.7 Ventilated area
• Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or
conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The
ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
1.2.8 Checks to the refrigeration equipment
• Where electrical components are being changed, they shall be fit for the purpose and to the correct
specification. At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt
consult the manufacturer’s technical department for assistance. The following checks shall be applied to
installations using flammable refrigerants:
• the charge size is in accordance with the room size within which the refrigerant containing parts are installed;
• the ventilation machinery and outlets are operating adequately and are not obstructed;
• if an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of
refrigerant; marking to the equipment continues to be visible and legible.
• markings and signs that are illegible shall be corrected;
• refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any
substance which may corrode refrigerant containing components, unless the components are constructed
of materials which are inherently
resistant to being corroded or are suitably protected against being so corroded.
1.2.9 Checks to electrical devices
• Repair and maintenance to electrical components shall include initial safety checks and component inspection
procedures. If a fault exists that could compromise safety, then no electrical supply shall be connected to the
circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to
continue operation, an adequate temporary solution shall be used. This shall be reported to the owner of the
equipment so all parties are advised. Initial safety checks shall include:
• that capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;
• that there no live electrical components and wiring are exposed while charging, recovering or purging the
system;
• that there is continuity of earth bonding.
1.2.10 Repairs to sealed components
• During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being
worked upon prior to any removal of sealed covers, etc. If it is absolutely necessary to have an electrical supply
to equipment during servicing, then a permanently operating form of leak detection shall be located at the most
critical point to warn of a potentially hazardous situation.
• Particular attention shall be paid to the following to ensure that by working on electrical components, the casing
is not altered in such a way that the level of protection is affected. This shall include damage to cables,
excessive number of connections, terminals not made to original specification, damage to seals, incorrect
fitting of glands, etc.

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NOTE: The use of silicon sealant may inhibit the effectiveness of some types of leak detection equipment.
Intrinsically safe components do not have to be isolated prior to working on them.
1.2.11 Repair to intrinsically safe components
• Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not
exceed the permissible voltage and current permitted for the equipment in use. Intrinsically safe components
are the only types that can be worked on while live
in the presence of a flammable atmosphere. The test apparatus shall be at the correct rating.
• Replace components only with parts specified by the manufacturer. Other parts may result in ignition of
refrigerant in the atmosphere from a leak.
1.2.12 Cabling
• Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any
other adverse environmental effects. The check shall also take into account the effects of aging or continual
vibration from sources such as compressors or fans.
1.2.13 Detection of flammable refrigerants
• Under no circumstances shall potential sources of ignition be used in the searching for or detection of
refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used.
1.2.14 Leak detection methods
• The following leak detection methods are deemed acceptable for systems containing flammable refrigerants.
Electronic leak detectors shall be used to detect flammable refrigerants, but the sensitivity may not be
adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.)
Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used. Leak
detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the
refrigerant employed and the appropriate percentage of gas (25 % maximum) is confirmed. Leak detection
fluids are suitable for use with most refrigerants but the use of detergents containing chlorine shall be
avoided as the chlorine
may react with the refrigerant and corrode the copper pipe-work.
• If a leak is suspected, all naked flames shall be removed or extinguished.
• If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the
system, or isolated (by means of shut off valves) in a part of the systemremote from the leak. Oxygen free
nitrogen (OFN) shall then be purged through the system both before and during the brazing process.
1.2.15 Removal and evacuation
• When breaking into the refrigerant circuit to make repairs or for any other purpose, conventional procedures
shall be used. However, it is important that best practice is followed since flammability is a consideration.
• The following procedure shall be adhered to:
• remove refrigerant;
• purge the circuit with inert gas; evacuate, then purge again with inert gas;
• open the circuit by cutting or brazing.
• When breaking into the refrigerant circuit to make repairs or for any other purpose, conventional procedures
shall be used. However, it is important that best practice is followed since flammability is a consideration.
• The refrigerant charge shall be recovered into the correct recovery cylinders. The system shall be flushed with
OFN to render the unit safe. This process may need to be repeated several times. Compressed air or oxygen
shall not be used for this task. Flushing shall be achieved by breaking the vacuum in the system with OFN and
continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a
vacuum. This process shall be repeated until no refrigerant is within the system. When the final OFN charge is
used, the system shall be vented down to atmospheric pressure to enable work to take place.
• Ensure that the outlet for the vacuum pump is not close to any ignition sources and there is ventilation available.
• Ensure that apparatus is mounted securely.
• Ensure that seals or sealing materials have not degraded such that they no longer serve the purpose of
preventing the ingress of flammable atmospheres. Replacement parts shall be in accordance with the
manufacturer’s specifications.

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1.2.16 Charging procedures
• In addition to conventional charging procedures, the following requirements shall be followed:
• Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses
or lines shall be as short as possible to minimize the amount of refrigerant contained in them.
• Cylinders shall be kept upright.
• Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.
• Label the system when charging is complete (if not already). Extreme care not to overfill the refrigeration
system.
• Prior to recharging the system it shall be pressure tested with OFN. The system shall be leak tested on
completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving
the site.
1.2.17 Decommissioning
Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and
all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being
carried out, an oil and refrigerant sample shall be taken.
It is essential that electrical power is available before the task is commenced.
• Become familiar with the equipment and its operation. Isolate system electrically.
• Before attempting the procedure ensure that:
1.2.18 Labelling
• Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label
shall be dated and signed. Ensure that there are labels on the equipment stating the equipment contains
flammable refrigerant.
1.2.19 Recovery
• When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good
practice that all refrigerants are removed safely.
• When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are
employed. Ensure that the correct numbers of cylinders for holding the total system charge are available. All
cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special
cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure relief valve a nd
associated shut-off valves in good working order.
• Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.
• The recovery equipment shall be in good working order with a set of instructions concerning the equipment
that is at hand and shall be suitable for the recovery of flammable refrigerants. In addition, a set of
calibrated weighing scales shall be available and in good working order.
• mechanical handling equipment is available, if required, for handling refrigerant cylinders;
• all personal protective equipment is available and being used correctly;
• the recovery process is supervised at all times by a competent person;
• recovery equipment and cylinders conform to the appropriate standards.
• Pump down refrigerant system, if possible.
• If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
• Make sure that cylinder is situated on the scales before recovery takes place.
• Start the recovery unit and operate in accordance with manufacturer’s instructions.
• Do not overfill cylinders. (No more than 80 % volume liquid charge).
• Do not exceed the maximum working pressure of the cylinder, even temporarily.
• When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the
equipment are removed from site promptly and all isolation valves on the equipment are closed off.
• Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and
checked.

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• Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the recovery
machine, check that it is in satisfactory working order, has been properly maintained and that any associated
electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if
in doubt.
• The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the
relevant Waste Transfer Note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.
• If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable
level to make certain that flammable refrigerant does not remain within the lubricant.
The evacuation process shall be carried out prior to returning the compressor to the suppliers. Only electric heating
to the compressor body shall be employed to accelerate this process. When oil is drained from a system, it shall
be carried out safely

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Refer to the following table to determine the specific indoor and outdoor unit model number of
your purchased equipment.
Capacity (Btu/h)
Indoor Unit Model
Outdoor Unit Model
Power Supply
36k
EAHAEC-36
ESCA16H-36
1Ph, 208/230V~, 60Hz
60k
EAHAEC-60
ESCA16H-60
2. Model Reference
2.1 Model Reference
2.2 External Appearance
2.2.1 Indoor Unit (Air Handler)
2.2.2 Outdoor Unit (Double Fan)

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Full Multi-position installation
• This AHU is capable of upflow, downflow, horizontal left, or horizontal right configurations.
Installation Convenience
• It simplifies the airflow volume adjustment process and saves lots of installation efforts. The traditional
adjustment method needs the installers to manually set the motor speed, according to the installation
instruction and ducting design. It takes lots of time if this thing doesn’t go well and decreases the
marginal profits.
Easy Fault Code Checking
• Thanks to advanced mutual data communication technology, the AHU system can intelligently self-
detecting the failure cause and generate a corresponding code.
• Installer or user can easily check the fault code displayed on the electric function board by just opening the
lid.
• It helps you proactively determine the failure cause, prepare for repairing parts ahead of field
maintenance work, greatly improve the work efficiency.
Nitrogen Charge and Leakage Check Valve
• Ecoer AHU indoor unit is standard with Nitrogen injection to maintain positive pressure of the indoor unit. It
is easy to check from the check valve whether there is leakeage in the evaporator or not.
Automatic Airflow Adjustment
• During the operation, when the dust filter or evaporator is clogged with dust, the load of the system and
motor torque increases. The MPU(microprocessor) on the unit can detect this change and adjust the fan
speed to keep the CFM stable.
3. Indoor Unit-Air Handler
3.1 Feature

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3.2 Dimensional Drawings
NO.
Model
36k
60k
Dimensions
inch
mm
inch
mm
A
Model Height
49
1245
53
1346
B
Model Width
21
534
24-1/2
622
C
Supply Air Opening Width
19-1/8
486
22-5/8
575
D
Return Air Opening Width
18-5/8
473
22-1/8
562
E
Model Depth
21
534
21
534
F
Supply Air Opening Depth
10-1/4
260
10-1/4
260
G
Return Air Opening Depth
18-3/4
476
18-3/4
476
H
Supply Air Opening Clearance
15/16
24
15/16
24
I
Return Air Opening Side Clearance
1-1/4
32
1-1/8
28
J
Return Air Opening Front Clearance
1-5/8
41
1-5/8
41
K
Return Air Opening Back Clearance
5/8
16
3/4
19

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Coil compartment (Access panel Removed)
Upflow drain pan
Horizontal drain pan
MINIMUM CLEARANCE
OF 25.4mm/1″ALL SIDES
FLEXIBLE DUCT
COLLAR
1.5m/59″
3.3 Part names
3.4 Service Place

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The air conditioning system comes with the following accessories. Use all of the installation parts
and accessories to in- stall the air conditioner. Improper installation may result in water leakage,
electrical shock and fire, or equipment failure.
Note:The remote control is only used to adjust the parameters.
Installation of Electric Auxiliary Heat Module(for some models)(not supplied)
Name
Shape
Quantity
Manual
3
Remote controller
1
Battery
2
Transfer connector
2
Wired remote controller
1
Fasten belt
2
Sponge
4
Flare nut
2
Packed with the
outdoor unit
Drain joint
1
Seal
1
Transfer connector
2
Name
Shape
Quantity
Owner’s manual& Installation manual
2
Seal sponge
1
Screw
7
Rubber cap
1
Electric auxiliary heating wiring diagram
/
1
Air switch label
/
1
3.5 Accessories

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200
0
400
600
1200
1000
800
0
Air flow rate(CFM)
0.1 0.148 0.2 0.3 0.4 0.5 0.6 0.8
External static pressure (in.w.c.)
36K
L
M
H
400
200
0
600
800
1000
1800
1600
1400
1200
0
Air flow rate(CFM)
0.1 0.148 0.2 0.3 0.4 0.5 0.6 0.8
External static pressure (in.w.c.)
60K
L
M
H
3.6 Fan Performance

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2m/6.56ft 1m/3.28ft
1.5m/4.92ft
Notes:
-Sound measured at 1.5m/4.92ft away from the center of the unit.
-Data is valid at free field condition
-Data is valid at nominal operation condition
-Reference acoustic pressure 0dB = 20µPa
-Sound level will vary depending on a range of factors such as the construction -(acoustic absorption coefficient) of
particular room in which the equipment is installed.
-The operating conditions are assumed to be standard.
36K 60K
3.7 Noise Criterion Curves

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3.8 Electrical Characteristics
Capacity (Btu/h)
36k hyper Heat
60k hyper Heat
Power (indoor)
Phase
1
1
Frequency And Volt
208/230V,60Hz
Power (Outdoor)
Phase
1
1
Frequency And Volt
208/230V,60Hz
Max. Fuse
Indoor unit(A)
15
15
Outdoor unit(A)
50
60
Indoor unit Power line
Line quantity
3
3
Line diameter(AWG)
16/1.5mm²
16/1.5mm²
Outdoor unit Power line
Line quantity
3
3
Line diameter(AWG)
8/8.0mm²
8/8.0mm²
Outdoor-indoor Signal line
Line quantity
2
2
Line diameter(AWG)
20/0.5mm2
20/0.5mm2
Thermostat Signal line
Line quantity
Line diameter(AWG)
18/1.0mm2
18/1.0mm2

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IDU Capacity (Btu/h)
IDU Wiring Diagram
36k/60k
16023000011626
Abbreviation
Paraphrase
Y/G
Yellow-Green Conductor
CAP
Indoor Fan Capacitor
FAN
Indoor Fan Motor
ECM
Indoor ECM Motor
TO CCM Comm.Bus
Central Controller
T1
Indoor Room Temperature Sensor
T2A
Indoor Coil Inlet Temperature Sensor
T2B
Indoor Coil Outlet Temperature Sensor
T2
Indoor Coil Temperature Sensor
3.9 Electrical Wiring Diagrams

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Indoor Unit Wiring Diagram

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3.10.1 Micro-Switch Introduce:
A ALARM terminal port CN33:
1.Provide the terminal port to connect ALARM, but no voltage of the terminal port , the power
from the ALARM system (not from the unit ).
2.Although design voltage can support higher voltage, but we strongly ask you connect the
power less than 24V, current less than 0.5A.
3. When the unit occurs the problem , the relay would be closed , then ALARM works.
3.10 Electrical Wiring Diagrams