Toshiba MMD-AP0721HF2UL, MMD-AP0481HF2UL, MMD-AP0961HF2UL User Manual
FILE No. A10-1603
Revision 1 :
Sep., 2016
Revision 2 :
Jun., 2017
SERVICE MANUAL
AIR-CONDITIONER
(MULTI TYPE)
<Outside Air Unit>
MMD-AP0481HF2UL
MMD-AP0721HF2UL
MMD-AP0961HF2UL
PRINTED IN JAPAN, Mar., 2016, TOMO
CONTENTS
SAFETY CAUTION .............................................................................3
1. OUTLINE OF OUTSIDE AIR UNIT ................................................ 8
1-1. SMMS System Specifications to Connect Outside Air Unit ............................................. 9
2. SPECIFICATIONS........................................................................ 12
3. CONSTRUCTION VIEWS (EXTERNAL VIEWS).......................... 13
4. WIRING DIAGRAM ......................................................................15
5. PARTS RATING ...........................................................................17
6. FAN CHARACTERISTIC.............................................................. 18
7. REFRIGERATING CYCLE DIAGRAM ......................................... 22
8. CONTROL OUTLINE ................................................................... 23
9. APPLIED CONTROL AND FUNCTION ....................................... 28
9-1. Indoor Print Circuit Board .................................................................................................28
9-2. Functions at test run.......................................................................................................... 33
9-3. Method to Set Indoor Unit Function DN Code ................................................................. 35
9-4. Applied Control in Indoor Unit .......................................................................................... 38
10. TROUBLESHOOTING ...............................................................51
10-1. Overview ........................................................................................................................... 51
10-2. Troubleshooting Method.................................................................................................. 52
10-3. Troubleshooting Based on Information Displayed on Remote Control ...................... 58
10-4. Check Codes Displayed on Remote Control and SHRM-e Outdoor Unit (7-Segment
Display on I/F Board) and Locations to Be Checked .................................................... 62
10-5. Sensor Characteristics .................................................................................................... 72
11. OWNER’S MANUAL ..................................................................73
12. INSTALLATION MANUAL ......................................................... 82
13. DETACHMENTS ........................................................................ 99
14. P.C. BOARD REPLACING PROCEDURES ............................. 104
15. EXPLODED VIEWS AND PARTS LIST ................................... 109
– 2 –
SAFETY CAUTION
The important contents concerned to the safety are described on the product itself and on this Service Manual.
Please read this Service Manual and understand the described items thoroughly in the following contents
(Indications/Illustrated marks), and keep the manual for reference. The manufacturer shall not assume any
liability for the damage caused by not observing the description of this manual.
[Explanation of indications]
Indication
DANGER
WARNING
CAUTION
Indicates that an imminent danger causing a death or serious injury of the repair engineers
and the third parties may occur when an incorrect work has been executed.
Indicates possibilities of a danger causing death or serious injury of the repair engineers,
the third parties, and the users due to problems from the product after installation when an
incorrect work has been executed.
Indicates that an injury or property damage (∗) may be caused to the repair engineers, the
third parties involved, and the users due to troubles of the product after installation when
an incorrect work has been executed.
Explanation
∗ Property damage : Enlarged damage concerned with property, furniture, and domestic animal/pet
[Explanation of illustrated marks]
Mark Explanation
Indicates prohibited items (Forbidden to do)
The sentences near an illustrated mark describe the concrete prohibited contents.
Indicates mandatory items (Compulsory to do)
The sentences near an illustrated mark describe the concrete mandatory contents.
Indicates cautions (Including danger/warning)
The sentences or illustration near or in an illustrated mark describe the concrete cautious contents.
[Confirmation of warning label on the main unit]
Confirm that labels are indicated on the specified positions
(Refer to the Parts disassembly diagram (Outdoor unit).)
If removing the label when parts are being replaced, stick it back on the original location.
DANGER
Turn “OFF” the breaker before removing the front panel and cabinet, otherwise an electric
shock is caused by high voltage which may result in death or injury.
During operation, a high voltage with 400V or higher of circuit (∗) at secondary circuit of the
high-voltage transformer is applied.
Turn off breaker.
Execute discharge
between terminals.
Prohibition
If touching a high voltage with the naked hands or body, an electric shock is caused even if using an
electric insulator.
∗ : For details, refer to the electric wiring diagram.
When removing the front panel or cabinet, execute short-circuit and discharge between
high-voltage capacitor terminals.
If discharge is not executed, an electric shock is caused by high voltage which could result in death
or injury.
After turning off the breaker, high voltage is kept on the high-voltage capacitor.
Do not turn on the breaker under condition that the front panel and cabinet are removed.
An electric shock is caused by high voltage which could result in death or injury.
– 3 –
Check ground wires.
Prohibition of modification.
Use specified parts.
Do not bring a child
close to the equipment.
Insulating measures
No fire
WARNING
Before troubleshooting or repair work, check the ground wire is connected to the ground
terminals of the main unit, otherwise an electric shock is caused when a leak occurs.
If the ground wire is not correctly connected, contact an electrician for rework.
Do not modify the products.
Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury.
For spare parts, use those specified (∗).
If unspecified parts are used, a fire or electric shock may be caused.
∗: For details, refer to the parts list.
Before troubleshooting or repair work, do not bring a third party (a child, etc.) except
the repair engineers close to the equipment.
It causes an injury with tools or disassembled parts.
Please inform the users so that the third party (a child, etc.) does not approach the equipment.
Connect the cut-off lead wires with crimp contact, etc, put the closed end side upward
and then apply a water-cut method, otherwise a leak or fire is caused at the users’ side.
When repairing the refrigeration cycle, take the following measures.
1) Be attentive to fire around the cycle. When using a gas stove, etc, be sure to put out fire
before work; otherwise the oil mixed with refrigerant gas may catch fire.
2) Do not use a welder in the closed room.
When using it without ventilation, carbon monoxide poisoning may be caused.
3) Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may
catch the inflammables.
Refrigerant
Check the used refrigerant name and use tools and materials of the parts which match with it.
For the products which use R410A refrigerant, the refrigerant name is indicated at a position
on the outdoor unit where is easy to see. To prevent miss-charging, the route of the service
port is changed from one of the former R22.
Do not use any refrigerant different from the one specified for complement or replacement.
Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may
result in a failure or explosion of the product or an injury to your body.
For an air conditioner which uses R410A, never use other refrigerant than R410A.
For an air conditioner which uses other refrigerant (R22, etc.), never use R410A.
If different types of refrigerant are mixed, abnormal high pressure generates in the
refrigeration cycle and an injury due to breakage may be caused.
Do not charge additional refrigerant.
If charging additional refrigerant when refrigerant gas leaks, the refrigerant composition in
the refrigerating cycle changes results in change of air conditioner characteristics or
refrigerant over the specified standard amount is charged and an abnormal high pressure is
applied to the inside of the refrigerating cycle resulted in cause of breakage or injury. Therefore
if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute vacuuming,
and then newly recharge the specified amount of liquid refrigerant.
In this time, never charge the refrigerant over the specified amount.
When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant or
air other than R410A into the specified refrigerant.
If air or others is mixed with the refrigerant, abnormal high pressure generates in the
refrigerating cycle resulted in cause of injury due to breakage.
After installation work, check the refrigerant gas does not leak.
If the refrigerant gas leaks in the room, poisonous gas generates when gas touches fire such
as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.
Never recover the refrigerant into the outdoor unit.
When the equipment is moved or repaired, be sure to recover the refrigerant with recovering
device. The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident
such as breakage or injury is caused.
Assembly/Cabling
After repair work, assemble the disassembled parts, and connect and lead the removed
wires as before. Perform the work so that the cabinet or panel does not catch the inner
wires.
If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is
caused at user’s side.
– 4 –
Insulator check
Ventilation
Be attentive to
electric shock
Compulsion
WARNING
After the work has finished, be sure to use an insulation tester set (500V Megger) to
check the resistance is 2MΩ or more between the charge section and the non-charge
metal section (Ground position).
If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s
side.
When the refrigerant gas leaks during work, execute ventilation.
If the refrigerant gas touches a fire, poisonous gas generates.
A case of leakage of the refrigerant and the closed room full with gas is dangerous because
a shortage of oxygen occurs. Be sure to execute ventilation.
When checking the circuit with the power-ON, use rubber gloves and do not touch
the charging section.
If touching to the charging section, an electric shock may be caused.
When you access inside of the service panel to repair electric parts, wait for about
five minutes after turning off the breaker. Do not start repairing immediately.
Otherwise you may get electric shock by touching terminals of high-voltage capacitors.
Natural discharge of the capacitor takes about five minutes.
When the refrigerant gas leaks, find the leaked position and repair it.
If the leaked position cannot be found and the repair work is interrupted, pump-down
and tighten the service valve, otherwise the refrigerant gas may leak into the room.
The poisonous gas generates when gas touches fire such as fan heater, stove or cocking
stove though the refrigerant gas itself is innocuous.
When installing equipment which includes a large amount of charged refrigerant
such as a multi air conditioner in a sub-room, it is necessary that the density does
not the limit even if the refrigerant leaks.
If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is
caused.
For the installation/moving/reinstallation work, follow to the Installation Manual.
If an incorrect installation is done, a trouble on the refrigerating cycle, water leak, electric
shock or fire is caused.
Check after repair
Check after reinstallation
Put on gloves
Cooling check
After repair work has been finished, check there is no trouble.
If check is not executed, a fire, electric shock or injury may be caused.
For a check, turn off the power breaker.
After repair work (installation of front panel and cabinet) has finished, execute a test
run to check there is no generation of smoke or abnormal sound.
If check is not executed, a fire or an electric shock is caused.
Before test run, install the front panel and cabinet.
Check the following items after reinstallation.
1) The ground wire is correctly connected.
2) The power cord is not caught in the product.
3) There is no inclination or unsteadiness and the installation is stable.
CAUTION
Be sure to put on the gloves (∗) and a long sleeved shirt:
otherwise an injury may be caused with the parts, etc.
(∗) Heavy gloves such as work gloves
When the power is turned on, start to work after the equipment has been sufficiently
cooled.
As temperature of the compressor pipes and others became high due to cooling/heating
operation, a burn may be caused.
– 5 –
• Refrigerant (R410A)
This air conditioner adopts a HFC type refrigerant (R410A) which does not deplete the ozone layer.
1. Safety Caution Concerned to Refrigerant (R410A)
The pressure of R410A is high 1.6 times of that of the previous refrigerant (R22).
Accompanied with change of refrigerant, the refrigerating oil has been also changed.
Therefore, be sure that water, dust, the previous refrigerant or the previous refrigerating oil is not mixed into
the refrigerating cycle of the air conditioner with refrigerant (R410A) installation work or service work.
If an incorrect work or incorrect service is performed, there is a possibility of a serious accident.
Use the tools and materials exclusive to R410A to ensure a safe work.
2. Cautions on Installation/Service
1) Do not mix other refrigerant or refrigerating oil.
For the tools exclusive to R410A, shapes of all the joints including the service port differ from those of the
previous refrigerant in order to prevent mixture of them.
2) As the use pressure of the refrigerant (R410A) is high, use material thickness of the pipe and tools which
are specified for R410A.
3) In the installation time, use clean pipe materials and work with great attention so that water and others do
not mix in because pipes are affected by impurities such as water, oxide scales, oil, etc.
Use clean pipes.
Be sure to braze with flowing nitrogen gas. (Never use any other gas except for nitrogen.)
4) For the ground protection, use a vacuum pump for air purge.
5) R410A refrigerant is azeotropic mixture type refrigerant.
Therefore use liquid type to charge the refrigerant. (If using gas for charging, composition of the
refrigerant changes and then characteristics of the air conditioner change.)
3. Pipe Materials
For the refrigerant pipes, copper pipe and joints are mainly used.
It is necessary to select the most appropriate pipes to conform to the standard.
Use clean material in which impurities adhere inside of pipe or joint is minimal.
1) Copper pipe
<Piping>
The pipe thickness, flare finishing size, flare nut and others differ according to a refrigerant type.
When using a long copper pipe for R410A, it is recommended to select “Copper or copper-base pipe
without seam” and one with bonded oil amount 0.0001 lbs / 32’ 10” (40mg / 10m) or less.
Also do not use crushed, deformed, discolored (especially inside) pipes.
(Impurities cause clogging of expansion valves and capillary tubes.)
<Flare nut>
Use the flare nuts which are attached to the air conditioner unit.
2) Joint
The flare joint and socket joint are used for joints of the copper pipe.
The joints are rarely used for installation of the air conditioner. However clear impurities when using them.
– 6 –
4. Tools
1. Required Tools for R410A
Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc.
Accordingly, the tools to be used are classified into the following three types.
1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))
2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)
3) Tools commonly used for R410A and for conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.
Tools exclusive for R410A (The following tools for R410A are required.)
Tools whose specifications are changed for R410A and their interchangeability
No.
Flare tool
Copper pipe gauge for
adjusting projection margin
Torque wrench
Gauge manifold
Charge hose
Vacuum pump adapter
Electronic balance for
refrigerant charging
Refrigerant cylinder
Leakage detector
Used tool
Usage
Pipe flaring
Flaring by conventional
flare tool
Tightening of flare nut
Evacuating, refrigerant
charge, run check, etc.
Vacuum evacuating
Refrigerant charge
Refrigerant charge
Gas leakage check
air conditioner installation
R410A
Existence of Whether conven-
new equipment tional equipment
for R410A can be used
Yes *(Note)
Yes *(Note)
Ye s N o
Ye s N o
Ye s N o
Ye s Ye s
Ye s N o
Ye s N o
Conventional air
conditioner installation
Whether conventional
equipment can be used
Ye s
*(Note)
No
No
Ye s
Ye s
No
Ye s
(Note) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary
as the general tools.
1) Vacuum pump. Use vacuum pump by
attaching vacuum pump adapter. 7) Screwdriver (+, –)
2) Torque wrench 8) Spanner or Monkey wrench
3) Pipe cutter 9) Hole core drill
4) Reamer 10) Hexagon wrench (Opposite side 4mm)
5) Pipe bender 11) Tape measure
6) Level vial 12) Metal saw
Also prepare the following equipments for other installation method and run check.
1) Clamp meter 3) Insulation resistance tester (Megger)
2) Thermometer 4) Electroscope
– 7 –
1. OUTLINE OF OUTSIDE AIR UNIT
• Type: Concealed Duct High Static Pressure type
Three models 4 ton, 6 ton and 8 ton are prepared.
• Connectable outdoor unit
SMMS-i series (MMY-MAP
UL, MMY-MAP
• Corresponding system
SMMS-i can connect to MMD-AP0481HF2UL for using diversity 30% (cooling basis) or below.
Definition
The Outside Air Unit means an air control for taken-in outside air.
Intake of the outside air often influences on the system so that the normal control of the air conditioner
becomes difficult or gives a large load upon air control and cooling performance.
Therefore it is frequently adopted to handle the outside air to a certain condition before the outside air will
enter in the main air conditioner.
This handling device is called a Outside Air Unit.
NOTE:
The Outside Air Unit is an air conditioner provided to handle the outside air load and is not to control the room
temperature.
For correspondence to the load of the indoor air control, set an air conditioner separately.
6HT9P-UL) of Heat pump super modular multi type outdoor unit.
∗∗∗
4HT6UL, MMY-MAP
∗∗∗
4HT9UL), SMMS-e series (MMY-MAP
∗∗∗
∗∗∗
6HT6P-
– 8 –
1-1. SMMS System Specifications to Connect Outside Air Unit
1-1-1. Combination conditions
• The Outside Air Unit is connectable to SMMS-i and SMMS-e.
• However this is not connectable to SHRM-i and SHRM-e.
• The total capacity of the indoor units and the Outside Air Units is restricted to 80% to 100% against the
capacity of the outdoor units. (This restriction should be strictly kept for correct control of the refrigerant.)
• Up to two Outside Air Units can be connected on one line of the multi system.
The allowable total capacity of the two Outside Air Units shall be 30% or less against the total capacity of the
indoor units (including the Outside Air Unit).
Up to two Outside Air Units
CORRECT
80 to 100% to capacity of the Outdoor Units
• The Outside Air Unit is usually used together with the indoor units on one line of the multi system.
The Outside Air Unit only cannot be connected.
occupy 30% or less against
total capacity of indoor units
INCORRECT
• Keep the height difference between the Outside Air Units to 19.7" (0.5m) or less.
Connection which stretches over two
floors is unavailable
CORRECT INCORRECT
Height difference:
19.7" (0.5m) or more
– 9 –
1-1-2. Use conditions
Changing the set temperature
1 Push the “TEMP. ” buttons of the wired remote control.
Push to increase the temperature, and to decrease the temperature. (The set temperature cannot
be changed in the fan mode.)
Operation mode
Setting range Factory default
COOL
HEAT 77 °F
61 to 80 °F
64 °F
NOTE
When heating
The air conditioner may continue running in the fan mode for about 30 seconds after stopping heating.
Operation mode and function
COOL : Cools the outside air and sends it into the room
HEAT : Heats the outside air and sends it into the room
FAN : Sends the outside air as it is
The air conditioner with the Outside Air Unit controls temperature of the supply air so that it is close to the
setup temperature of the remote control.
However temperature of the supply air may not be close to the setup temperature according to temperature of
the outside air or the operation condition of the indoor units for air conditioning in one line.
REQUIREMENT
• The air conditioner with the Outside Air Unit cannot control the room temperature.
• For control of the room temperature, an indoor unit for air conditioning is required separately.
Use conditions
• In COOL mode, if temperature of the outside air is under the setup temp. +5.4 °F, FAN status is automatically made.
When temperature of the outside air is under 66 °F, FAN status is also made regardless of the setup temperature.
• In HEAT mode, if temperature of the outside air is over the setup temp. -5.4 °F, FAN status is automatically made.
When temperature of the outside air is over 59 °F, FAN status is also made regardless of the setup temperature.
• Case to use in SMMS-i
Outdoor Air Temperature °F
14 32 50 68 86 104 122
Setup temp.
Setup temp.
-5.4°F
+5.4°F
CoolingFan
Automatic COOL
operation starts
Fan
COOL mode
HEAT mode
41 109
23 109
Heating
Automatic HEAT
operation starts
– 10 –
• Case to use in SMMS-e
Outdoor Air Temperature °F
14 32 50 68 86 104 122
Setup temp.
Setup temp.
-5.4°F
+5.4°F
CoolingFan
Automatic COOL
operation starts
Fan
COOL mode
HEAT mode
41 115
23 109
Heating
Automatic HEAT
operation starts
REQUIREMENT
• In “COOL” or “FAN” mode, if temperature of the outside air is under 41 °F, the operation stop automatically in
order to protect the equipment.
In this case, continue the operation by selecting “HEAT” mode.
• In “HEAT” mode, if temperature of the outside air is under 23 °F, the operation stops automatically in order to
protect the equipment.
When operating the air conditioner with the outside air temp. under 23 °F (minimum 5 °F), set temp. of the
outside air to be taken in to 23 °F or upper using a duct heater (locally procured).
For details, consult the dealer which you purchased the air conditioner.
– 11 –
2. SPACIFICATIONS
Outside Air Unit
Model name MMD- AP0481HF2UL AP0721HF2UL AP0961HF2UL
Cooling capacity (Note1) kBtu/h 48.0 72.0 96.0
Heating capacity (Note1) kBtu/h 30.0 47.0 59.0
Power supply 230V (208/230V) 1phase
Electical
characteristics
Outer
dimension
Main unit weight lbs 212 349
Heat exchanger Finned tube
Soundproof / Heat-insulationg material Non-flammable insulation
Fan Centrifugal fan
Standard air flow cfm 636 989 1237
Motor W 160 160x2
External static pressure
(factory default)
Externalstatic
pressure
Air flow limit
Air filter Field supply
Control Wired remote control
Connecting
pipe
Sound pressure level
Operation
range for SMMS-i
Operation
range for SMMS-e
Running current A 1.58/1.56 3.00/2.88 3.32/3.17
Power consumption kW 0.31/0.34 0.56/0.58 0.64/0.66
Starting current A 3.90/3.20 7.70/6.30 8.50/6.90
Height In 19.5"
Width In 35.4" 55"
Depth In 49.8"
208V/230V In WG 0.55/0.86 0.74/1.00 0.41/0.85
208V(H / M / L) In WG 0.75/0.55/0.16 0.84/0.74/0.24 0.67/0.41
230V(H / M / L) In WG 1.06/0.86/0.50 1.08/1.00/0.65 1.01/0.85
Lower limit cfm 445 693 866
Upper limit cfm 700 1088 1360
Gas pipe In 5/8" 7/8"
Liquid pipe In 3/8" 1/2"
Drain pipe In
208V(H / M / L) dB(A) 44/43/36 47/46/40 47/45
230V(H / M / L) dB(A) 46/45/42 48/47/46 50/49
Cooling (Note 2) °F 41 - 109
Heating (Note 3) °F 23 - 109
Cooling (Note 2) °F 41 - 115
Heating (Note 3) °F 23 - 109
VP25
(Polyvinyl chloride tube : External Dia.1-1/4 internal Dia.1)
(H/L)
(H/L)
(H/L)
(H/L)
* The setting temperature is 60 - 80 °F.
* Height difference between Outside Air Units must be within 1.97"(0.5 m).
Note 1: Rated conditions Cooling : Outdoor air temperature 91 °F DB/82 °F WB setting temperature 64 °F
Heating : Outdoor air temperature 32 °F DB/26 °F WB setting temperature 77 °F
Note 2: * When supply air temperature is “setting temperature + 5.4 °F” or less, Outside Air Unit operates as
FAN mode.
Note 3: * When supply air temperature is “setting temperature - 5.4 °F” or over, Outside Air Unit operates as
FAN mode.
– 12 –
3. CONSTRUCTION VIEWS (EXTERNAL VIEWS)
3-1. MMD-AP0481HF2UL
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– 13 –
3-2. MMD-AP0721HF2UL, AP0961HF2UL
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4. WIRING DIAGRAM
4-1. MMD-AP0481HF2UL
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140
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䎃䎃䏑䏘䏐䏅䏈䏕䎃䏄䏖䎃䏉䏌䏊䏘䏕䏈䎃䏄䏑䏇䎃䏏䏈䏄䏇䎃䏚䏌䏕䏈䎊䏖䎃䏆䏒䏏䏒䏕䎃䏒䏉䎃䏉䏄䏑䎃䏐䏒䏗䏒䏕䎑
䎃䎃䏈䏛䏆䏋䏄䏑䏊䏈䎃䏗䏋䏈䎃䏏䏈䏄䏇䎃䏚䏌䏕䏈䎃䏒䏉䎃䏄䏕䏕䏒䏚䎃䎋䎃䎃䎃䎌䎃䏓䏒䏖䏌䏗䏌䏒䏑䎃䏄䏉䏗䏈䏕䎃䏆䏋䏈䏆䏎䎃䏗䏋䏈䎃䏗䏈䏕䏐䏌䏑䏄䏏䎃
䎗䎑䎃䎤䎃䎃䏓䏒䏖䏌䏗䏌䏒䏑䎃䏌䏖䎃䏆䏒䏑䏑䏈䏆䏗䏈䏇䎃䏗䏒䎃䏗䏈䏕䏐䏌䏑䏄䏏䎃䏅䏏䏒䏆䏎䎃䏚䏋䏈䏑䎃䏆䏋䏄䏑䏊䏈䎃䏗䏒䎃䏖䏗䏄䏗䏌䏆䎃䏓䏕䏈䏖䏖䏘䏕䏈䎑
䎖䎑䎃䎃䎃䎃䎃䎃䎃䎃䏌䏑䏇䏌䏆䏄䏗䏈䏖䎃䏗䏋䏈䎃䏆䏒䏑䏗䏕䏒䏏䎃䎳䎑䎦䎃䏅䏒䏄䏕䏇䎑
䎕䎑䎤䎃䏇䏒䏗䏗䏈䏇䎃䏏䏌䏑䏈䎃䏄䏑䏇䎃䏅䏕䏒䏎䏈䏑䎃䏏䏌䏑䏈䎃䏌䏑䏇䏌䏆䏄䏗䏈䎃䏗䏋䏈䎃䏚䏌䏕䏌䏑䏊䎃䏄䏗䎃䏖䏌䏗䏈䎑
5. PARTS RATING
Parts name MMD-AP0481HF2UL
Fan motor STF200-160U4A
Running capacitor for fan motor 400V 6µF 400V 4µF
Transformer TT-12
TA sensor Lead wire length: 47.2 in (1200mm) Lead wire length: 32.2 in (818mm)
TF sensor Lead wire length: 98.4 in (2500mm)
TC1 sensor
TC2 sensor
TCJ sensor
Pulse motor EDM-MD12TF-3
Electronic control valve EDM-B60YGTF-1 EDM-BAOYGTF-1
Ø0.16 in (Ø4 mm) size, Lead wire length:
47.2 in (1200mm), Vinyl tube (Blue)
Ø0.24 in (Ø6 mm) size, Lead wire length:
47.2 in (1200mm), Vinyl tube (Black)
Ø0.24 in (Ø6 mm) size, Lead wire length:
47.2 in (1200mm), Vinyl tube (Red)
MMD-AP0721HF2UL, MMD-AP0961HF2UL
Ø0.16 in (Ø4 mm) size, Lead wire length:
78.7 in (2000mm), Vinyl tube (Blue)
Ø0.24 in (Ø6 mm) size, Lead wire length:
78.7 in (2000mm), Vinyl tube (Black)
Ø0.24 in (Ø6 mm) size, Lead wire length:
78.7 in (2000mm), Vinyl tube (Red)
– 17 –
6. FAN CHARACTERISTIC
䇭
䇭
䇭
䇭
<MMD-AP0481HF2UL>
Tap
ddiM
230V䇭
230V
636
tar wolf ria dradnatSerusserp citats lanretxE
Tap
V032A - mfc
cfm - A
V032scitsiretcarahc naF
Fan characteristics
zH 06 / V 802 :ecruos rewoPzH 06 / V 032 :ecruos rewoP
57.0hgiH60.1hgiH
55.0elddiM68.0el
61.0woL05.0woL
636
etar wolf ria dradnatSerusserp citats lanretxEe
)mfc()GW ni()mfc()GW ni(
– 18 –
<MMD-AP0721HF2UL>
䇭
V
䇭
V
䇭
V
䇭
230V䇭
230
atetar wolf ria dradnatSerusserp citats lanretxEpat
00.1elddiM
989 989
032A - mfc
cfm - A
032scitsiretcarahc naF
Fan characteristics
zH 06 / V 802 :ecruos rewoPzH 06 / V 032 :ecruos rewoP
48.0hgiH80.1hgiH
47.0elddiM
42.0woL56.0woL
etar wolf ria dradnatSerusserp citats lanretxEp
)mfc()GW ni()mfc()GW ni(
– 19 –
<MMD-AP0961HF2UL>
䇭
V
䇭
V
䇭
V
䇭
230V䇭
230
atetar wolf ria dradnatSerusserp citats lanretxEpat
0woL
1237 1237
032A - mfc
cfm - A
032scitsiretcarahc naF
Fan characteristics
zH 06 / V 802 :ecruos rewoPzH 06 / V 032 :ecruos rewoP
76.0hgiH10.1hgiH
14.0woL58.
etar wolf ria dradnatSerusserp citats lanretxEp
)mfc()GW ni()mfc()GW ni(
– 20 –
Wire connection change of fan motor
F
The motor wires for the fan have been connected to
Change the wire connection if change of the external static pressure is required due to the duct resistance.
<MMD-AP048 type>
FM
Fan motor
Black
Blue
Orange
F1 F2 F3 F4
Control
2
at shipment from the factory.
Electrical control box
P.C.
board
Orange (at shipment of factory)
4P terminal block
Lead wire for changing the external static pressure
When changing the external static pressure is
necessary, change connection of this lead wire.
2P terminal block
<MMD-AP072 type, AP096 type>
Electrical control box
FM
Fan motor
Blue
F1 F2 F3 F4 F1 F2 F3 F4
Orange (at shipment of factory)
Black
Orange
FM
Fan motor
Blue
Orange (at shipment of factory)
Control
P.C.
Black
Orange
2P terminal block
Lead wire for changing the external static pressure
When changing the external static pressure is
necessary, change connection of this lead wire.
board
4P terminal block
REQUIREMENT
When the external static pressure was changed, enter the changed static pressure value in the identification
plate of the unit.
<MMD-AP048, AP072 type>
Terminal block No. Fan motor wiring Remarks
F1 (Low static pressure tap) Blue —
F2 (Middle static pressure tap) Orange At shipment from factory
F3 (High static pressure tap) Black —
<MMD-AP096 type>
Terminal block No. Fan motor wiring Remarks
F1 (-) Blue Not used.
F2 (Low static pressure tap) Orange At shipment from factory
F3 (High static pressure tap) Black —
– 21 –
7. REFRIGERATING CYCLE DIAGRAM
Gas sideLiquid side
Sensor (TF)
Strainer
Pulse Motor
Valve (PMV)
Sensor
(TC2)
Capillary tube
Functional part name
Pulse motor valve PMV
Air heat exchanger
at indoor side
Sensor
(TCJ)
Sensor
(TA)
Fan
M
Fan motor
Function outline
(Connector CN082 (6P): Blue)
1) Super heat control function in cooling operation
2) Subcool control function in heating operation
3) Cooling refrigerant oil recovery function
4) Heating refrigerant oil recovery function
Sensor
(TC1)
1. TA
2. TC1
Temperature sensor 3. TC2
4. TCJ
5. TF
(Connector CN104 (2P): Yellow)
1) For detection of outdoor suction temperature
(Connector CN100 (3P): Brown)
1) For super heat control of PMV in cooling operation
(Connector CN101 (2P): Black)
1) For subcool control of PMV in heating operation
(Connector CN102 (2P): Red)
1) For super heat control of PMV in cooling operation
(Connector CN103 (2P): Green)
1) For detection of discharge temperature
– 22 –
8. CONTROL OUTLINE
No.
1
When power
supply is reset
2
Operation
selection
Item
Outline of specifications
1) Distinction of outdoor units
When the power supply is reset, the outdoor units are
distinguished, and control is selected according to the
distinguished result.
2) If resetting the power during a problem, the check
code is cleared. After ON/OFF button on the remote
control is pushed to resume operation and the
problem persists, the check code is again displayed
on the remote control.
1) The operation mode is selected based on the
operation mode command on the remote control.
Command from
remote control
STOP
FAN
COOL
HEAT
* DRY or AUTO mode cannot be selected.
Outside Air Unit stops.
Fan operation
Cooling operation
Heating operation
Control outline
Remarks
Remote
3
control setup
temperature
Capacity
4
control
PMV control
5
1) Adjustment range
Adjustment range
• In cooling or heating operation: 61 to 81 ˚F
[ 16 to 27 ˚C ]
At shipment from factory:
• In cooling operation: 64 ˚F [ 18 ˚C ]
• In heating operation: 77 ˚F [ 25 ˚C ]
1) Differed from other indoor air conditioners, the
Outside Air Unit usually operates with the maximum
capacity.
1) Outside Air Unit controls PMV using the corrected
value of each sensor according to the operation mode.
COOL
• SH control is performed by correcting indoor coil
temp (TC1) and inlet air temp. from outside (TA).
HEAT
• UC control is performed by correcting indoor coil
temp (TC2, TCJ) and inlet air temp. from outside
(TA).
2) The value displayed by monitor function of the remote
control switch becomes the corrected sensor data.
(See Monitor function of the remote control switch.)
Data to be corrected:
Inlet air temp. from outside
(TA), Indoor coil temp
(TCJ, TC2, TC1)
– 23 –
No.
23 ˚F [ –5 ˚C]
TS –5.4 ˚F [–3 ˚C]
41 ˚F [5 ˚C]
TS +5.4 ˚F [3 ˚C] 109 ˚F [43 ˚C]
23 ˚F [ –5 ˚C]
TS –5.4 ˚F [ –3 ˚C] 109 ˚F [43 ˚C]
41 ˚F [5 ˚C]
TS +5.4 ˚F [3 ˚C] 115 ˚F [46 ˚C]
6
Fan control
7
Forced thermostat
OFF
Item
Outline of specifications
1) On the Outside Air Unit, HH tap only isprovided.
2) For 1 minute after operation start, the forced fan
OFF control is invalid.
3) There is no cool air discharge preventive control.
4) When refrigerant is recovered while cooling or fan
operation is selected, and when cooling oil is
recovered while heating operation is selected, the
fan continues operation.
However the priority is given to forced fan OFF
control
1) The thermostat is forcedly off by outdoor suction
temperature (TA).
• COOL: At TA < 66 ˚F [ 19 ˚C ]
•
HEAT: At TA > 59 ˚F [ 15 ˚C ] or TA < 23 ˚F [ – 5 ˚C ]
2) The thermostat is forcedly off by outdoor suction
temperature (TA) and remote control setting
temperature (TS).
• COOL: At TA < TS + 5.4 ˚F [ + 3 ˚C ]
• HEAT: At TA > TS – 5.4 ˚F [ – 3 ˚C ]
Remarks
8
Forced fan OFF
1) The thermostat is forcedly off by outdoor suction
temperature (TA).
• COOL/FAN: At TA < 41 ˚F [ 5 ˚C ]
• HEAT: At TA < 23 ˚F [ – 5 ˚C ]
2) After fan-OFF status continued for 60 minutes, turn
on the fan for 1 minute.
The forced fan-OFF status continues or released by
outdoor suction temperature (TA) in this time.
<Release conditions>
• COOL/FAN: At TA ≥ 41 ˚F [ 5 ˚C ]
• HEAT: At TA ≥ 23 ˚F [ – 5 ˚C ]
3) Other forced fan OFF release conditions
• Operation stop
• Operation mode exchange
•T
est run mode
Case to use in SMMS-i
Operation
mode
COOL
HEAT
FAN
[˚C]
˚F
[–10]
14
23 ˚F [ –5 ˚C] TS –5.4 ˚F [–3 ˚C]
[0]
32
41 ˚F [5 ˚C] TS +5.4 ˚F [3 ˚C] 109 ˚F [43 ˚C]
[10]
50
Outside temp.
[20]
68
FAN
Case to use in SMMS-e
Operation
mode
COOL
HEAT
FAN
[˚C]
˚F
[–10]
14
23 ˚F [ –5 ˚C] TS –5.4 ˚F [ –3 ˚C] 109 ˚F [43 ˚C]
[0]
32
41 ˚F [5 ˚C] TS +5.4 ˚F [3 ˚C] 115 ˚F [46 ˚C]
[10]
50
Outside temp.
[20]
68
FAN
Operation ready display
[30]
86
COOLFAN
FANHEAT
[30]
86
COOLFAN
FANHEAT
[40]
104
[40]
104
[50]
122
[50]
122
– 24 –
No.
9
Freeze preventive
control
(Low temperature
release)
Item
Outline of specifications
1) The cooling operation is performed as follows based on
the detected temperature of TC1 sensor, TC2 sensor
and TCJ sensor.
• When [J] zone is detected for 5 minutes, thermostat is
forced to turn off.
• In [K] zone, timer counting pauses and is held.
• When [J] zone is detected, timer is cleared and returns
to normal operation.
• If thermostat is forcedly off by continuation of [J] zone,
indoor fan only operates until zone changes to [I] zone.
When the following conditions are satisfied, control
function resets.
<Reset conditions>
TC1 > 54 ˚F [ 12 ˚C ] and TC2 > 54 ˚F [ 12 ˚C ] and
TCJ > 54 ˚F [ 12 ˚C ]
20 minutes passed after stop
F˚ [ ˚C ]
P1
Q1
I
K
J
a
Remarks
TC1
P1
50 ˚F [ 10 ˚C ] (41 ˚F [ 5 ˚C ])
Q1
32 ˚F [ 0 ˚C ]
TC2, TCJ
14 ˚F [ –10 ˚C ]
7 ˚F [ –14 ˚C ]
( ) value:
When power supply is turned on, if
the value is under this temperature,
thermostat is forcedly off.
2) The cooling operation is performed as follows based on
the detected temperature of TC2 sensor and TCJ
sensor.
When [M] zone is detected for 45 minutes, thermostat
is forced to turn off.
In [N] zone, timer counting pauses and is held.
When shifting to [M] zone again, timer counting
restarts and continues.
When [L] zone is detected, timer is cleared and
operation returns to normal operation.
F˚ [ ˚C ]
P2
Q2
L
N
M
P2
Q2
TC2, TCJ
41 ˚F [ 5 ˚C ]
28 ˚F [ –2 ˚C ]
<Reset conditions>
TC1 > 54 ˚F [ 12 ˚C ] and TC2 > 54 ˚F [ 12 ˚C ] and
TCJ > 54 ˚F [ 12 ˚C ]
20 minutes passed after stop
– 25 –
No.
10
Cooling oil
(Refrigerant)
recovery control
11
Heating
refrigerant (oil)
recovery control
12
Short intermittent
operation compensation control
13
Remained heat
elimination
Item
Outline of specifications
When the indoor air conditioner which stops, in which
thermostat is off, or which operates [FAN] performs the
following control by receiving the cooling oil (refrigerant)
recovery signal from the outdoor unit.
Opens PMV of the indoor air conditioner with certain
opening angle.
When the indoor air conditioner which stops, in which
thermostat is off, or which operates [FAN] performs the
following control by receiving the heating refrigerant (oil)
recovery signal from the outdoor unit.
Opens PMV of the indoor air conditioner with certain
opening angle.
Detects temperature of TC2 and closes PMV.
1) For 5 minutes after start of operation, the operation
continues forcedly even if entering in thermostat OFF
condition.
(2) However cooling/heating selection, operation ready and
protective control are given with priority, and thermostat
is turned off.
1) If stopped from [HEAT] operation, the indoor fan operates
for approx. 30 seconds.
Remarks
• Recovery
operation is
usually performed
every 2 hours.
• Recovery
operation is
usually performed
every 1 hour.
14
Filter sign display
15 [Operation stand-by]
[Heating stand-by]
display
1) Estimates operation time of the indoor fan, sends the
filter exchange signal to remote control when the
specified time (2500H) passed and then displays it on
LCD.
2) Clears the estimate timer when received filter reset
signal from remote control.
In this time, if the specified time has passed, resets the
measured time and erases the LCD display.
<Ready stand-by>: displa displayed on the remote control.
1) When the following check codes are indicated.
• There is an indoor air conditioner which detected
indoor overflow [P10].
• There is an indoor air conditioner which detected
interlock warning [L30].
2) During forced thermo OFF.
• [COOL] operation is unavailable because other
indoor air conditioner operates in [HEAT] mode.
• COOL priority setting (Outdoor I/F P.C. board
SW11-bit1 is ON) is made, and other indoor air
conditioner operates in [COOL/DRY] mode.
Therefore [HEAT] operation is unavailable.
3) When fan stops by forced fan OFF control.
4) The above indoor air conditioners unavailable to
operate enter in [Standby] status with thermo-OFF.
•
[Operation stand-by]
display
<HEAT stand-by>: displayed on the remote control.
1) Defrosting
• Indoor fan stops because unit is under defrost
operation.
– 26 –
• [Heating stand-by]
display
No. Item Outline of specifications
Remarks
Central control
16
mode selection
1) The remote control at indoor air conditioner side
becomes able to select the operable contents ofthe
unit by setup at the central control side.
2) Setup contents
• In case of TCC-LINK central control
Operation from
TCC-LINK central
control
Single
[Central 1]
[Central 2]
[Central 3]
[Central 4]
(O : Operation available, × : Operation unavailable)
START/STOP Operation Timer Temp Air speed Air direction
setting selection setting setting setting setting
O
×
×
O
O
O
O
×
×
×
Operation on RBC-ATM32UL
O
×
×
O
O
O
O
×
×
O
—
—
—
—
—
* For the Outside Air Unit, setting functions for air speed and air direction are not provided.
In central control mode,
[Central control] display
(Lights up)
Display flashes when
item which operation
is prohibited was
changed from remote
control.
RBC-AMT32UL
—
—
—
—
—
[Central control]
display
– 27 –
9. APPLIED CONTROL AND FUNCTION
9-1. Indoor Control Block Diagram
9-1-1. When Main (Simple) Wired Remote Control Connected
unit
Power
source
Outdoor
L2
L1
A BAB
#2 #3
circuit
Power
Key switch
Function setting
CPU
supply
DC5V
AB
Remote control
LED
LCD
Display
Main (Simple) wired remote control (up to 2 units)
Display
EEPROM
communication circuit
EEPROM
circuit
control
Remote
communication
DC20V
DC12V
TA sensor
TC1 sensor
DC5V
TC2 sensor
CPU
H8/3039
Sameas left Sameas left
TCJ sensor
Driver
HA
BUS
AC
In operation
External output
U1 U2 U1 U2
L2
circuit
communication
synchronization
signal input circuit
Alarm
HEAT
COOL
Getting ready
Thermostat ON
Fan motor
L1
FAN
relay circuit
unit
Outdoor
Power
source
Indoor/outdoor communication
U2
unit
U1
Outdoor
U1 U2
L2
L1
Power source
208/230-1-60
Indoor control P. C. board (MCC-1403)
#1
Indoor unit
– 28 –
PMV
Power supply circuit
fan
Indoor
Transformer
motor
9-1-2. When Wireless Remote Control Kit Connected
Up to 8 units can be
connected.
L2
L1
Power
source
unit
Outdoor
#2 #3
Sensor P. C. board
Wireless remote control kit
Remote control
communication
circuit
EEPROM
circuit
control
Remote
AB AB AB
communication
Sameas left Sameas left
Display section
Sensor circuit
TA sensor
TC2 sensor
TC1 sensor
CPU
H8/3039
TCJ sensor
Driver
HA
U1 U2 U1 U2
BUS
circuit
communication
AC
synchronization
signal input circuit
unit
L2
L1
Outdoor
Power
source
U2
Indoor/outdoor communication
unit
U1
Outdoor
U1 U2
L2
L1
208/230-1-60
Power source
#1
Indoor unit
C. board (MCC-1403)
DC5V
DC20V
DC12V
Indoor control P.
Power supply circuit
PMV
– 29 –
In operation
External
output
Alarm
COOL
Thermostat ON
Getting ready
Indoor
FAN
HEAT
Fan motor
control circuit
fan
motor
Transformer
9-1-3. When Both Wired (Simple) Remote Control and
Wireless Remote Control Kit Connected
unit
Power
source
Outdoor
L2
L1
#2 #3
Wireless remote control kit
Remote control
EEPROM
Remote
AB AB AB
Key switch
Function setting
CPU
DC5V
circuit
Power
supply
Remote control
LCD
Display
LED
Display
EEPROM
communication circuit
Main (Simple) wired remote control (up to 2 units)
communication
circuit
circuit
control
communication
Sameas left Sameas left
Display section
Sensor circuit
TA sensor
TC2 sensor
TC1 sensor
CPU
H8/3039
TCJ sensor
Driver
HA
External
output
BUS
circuit
communication
AC
synchronization
signal input circuit
Alarm
In operation
Thermostat ON
Getting ready
U1 U2 U1 U2
L2
L1
HEAT
COOL
unit
Outdoor
Power
source
U2
Indoor/outdoor communication
unit
U1
FAN
Outdoor
U1 U2
L2
L1
208/230-1-60
Power source
#1
Indoor unit
C. board (MCC-1403)
DC5V
DC20V
DC12V
Indoor control P.
– 30 –
Power supply circuit
PMV
Fan motor
control circuit
fan
motor
Indoor
Transformer
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