IV Produkt ThermoCooler HP 100 Troubleshooting guide

Operation and maintenance instructions
Original instructions
Order number :
Project :
Reversible heat pump
ThermoCooler HP 100–980
ThermoCooler HP

Table of Contents
1 General
1.1 Intended use ...................................................................................................................2
1.2 Safety precautions......................................................................................................2
1.3 Manufacturer...................................................................................................................2
1.4 Designations ...................................................................................................................2
1.5 CE marking and EU Declaration of Conformity.....................................2
1.6 Maintenance....................................................................................................................3
1.7 Handling of refrigerant .............................................................................................3
1.8 Extended warranty......................................................................................................4
1.9 Spare parts.......................................................................................................................4
1.10 Dismantling and decommissioning...............................................................4
2 Technical description
2.1 Reversible heat pump ThermoCooler HP..................................................5
3 Wiring instructions
3.1 ThermoCooler HP........................................................................................................8
3.2 Envistar Flex unit parts............................................................................................9
4 Operation
4.1 Commissioning rules .............................................................................................10
4.2 Checklist commissioning ThermoCooler HP........................................10
4.3 Cooling status ............................................................................................................12

Table of Contents, cntd
5 Maintenance instructions
5.1 Service schedule.......................................................................................................13
5.2 Periodic inspection ................................................................................................13
6 Alarm management and troubleshooting
6.1 Troubleshooting in the event of an alarm................................................14
6.2 Alarm information for inverter and compressor..................................15
6.3 Troubleshooting via symptoms.......................................................................16
6.4 Alarm reset ....................................................................................................................16
7 Technical data
7.1 Table air flow, cooling power, operating current, etc.....................17
8 Ordering keys
8.1 Reversible heat pump ...........................................................................................17
8.2 Trim heater.....................................................................................................................17

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN
Page 2
Continuous product development may give rise to specification changes without notice.
1 General
1.1 Intended use
The ThermoCooler HP reversible heat pump is intended to be used to cool and heat
supply air in properties. The unit is designed to be installed together with IV Produkt
AB air handling units.
The reversible heat pump should not be used as a standalone unit.
1.2 Safety precautions
Safety precautions for ThermoCooler HP installed together with ventilation units
can be found in the Operation and Maintenance Instructions and the Assembly
Instructions for Envistar Flex.
1.3 Manufacturer
The ThermoCooler HP reversible heat pump is manufactured by:
IV Produkt AB
Sjöuddevägen 7
SE-350 43 VÄXJÖ
1.4 Designations
The details of the reversible heat pump can be found on the model identification
label placed on the front cover.
Art. Nr. 19121-0009_00
Contains fluorinated greenhouse gases
covered by the Kyoto protocol.
Circuit 1
Circuit 2
Circuit 3
Refrigerant
charge
Ordernumber
Code Key
Model
Name of project
Date of manufacture
PS Max allowable press.
PT Test pressure
TS Temperature range
Protection level - low
Protection level - high
Refrigerant, Fluid group
GWP
Code
Reversible heat pump
ThermoCooler HP
Typical model identification label
1.5 CE marking and EU Declaration of Conformity
ThermoCooler HP is CE-marked, which means that upon delivery, it conforms to
applicable provisions in EU Machinery Directive 2006/42/EC as well as to the EU
Directives applicable to the type of unit, e.g. Pressure Equipment Directive (PED)
2014/68/EU. As certification confirming that the requirements have been met, we
provide an EU Declaration of Conformity, which is available at ivprodukt.com.
The declaration of conformity only applies under the condition that the air handling
unit is installed in accordance with IV Produkt AB’s assembly, operation and
maintenance instructions, and that no modifications are made to the product.
If e.g. the control equipment/electrical system is divided during transport, this must
be reset and inspected by an qualified electrician.

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN Page 3
Continuous product development may give rise to specification changes without notice.
1.6 Maintenance
Regular maintenance of reversible heat pumps should be performed by a qualified
cooling engineer.
1.7 Handling of refrigerant
The following information summarises the requirements and guidelines for
handling the refrigerant used in cooling units. For further information, see the
F-gas Regulations (517/2014) and the Refrigerant Regulations (SFS 2016:1128).
The purpose of the regulations is to contribute to achieving EU goals for reduced
climate impact in accordance with the Kyoto Protocol.
Operator responsibilities
Generally speaking, the unit operator must:
• Minimise and prevent leakage
• Take corrective action to remedy any leakage that arises
• Ensure that the service and repair of the refrigerant circuit is carried out by a
certified refrigeration technician
• Ensure that refrigerant is handled in an environmentally secure manner and in
accordance with national regulations.
We refer to the European Parliament’s definition of an operator as: “...the natural or
legal person exercising actual power over the technical functioning of the equipment
and systems...”.
The levels for the various actions to be taken for a system are calculated using
carbon dioxide equivalents, CO2e(tonnes). This figure is calculated by multiplying
the refrigerant’s GWP value (Global Warming Potential) by the filling amount in kilos.
GWP for R410a is 2088. A filling amount of 5.0 kg R410a therefore corresponds to
(5.0×2088)/1000 = 10.44 CO2e(tonnes).
Leakage inspection and registration
The following applies for one-piece units with 5 CO2e(tonnes) refrigerant content or
more per circuit:
• Leakage inspection must be carried out by a certified refrigeration technician:
– When installing/commissioning the unit
– Periodically at least once per 12 months, i.e. no more than 12
months between inspections
– within one month of any work being performed (e.g. sealing a leak, replacing a
component).
• The operator must record events, such as the volume and type of refrigerant
topped up, refrigerant taken into possession, results of inspections and work
done, person and company who carried out service and maintenance.
If the total refrigerant content of the ventilation system exceeds 14 CO2e(tonnes),
the result of the inspections (inspection report) must be sent to the regulatory
authorities and be in their possession no later than 31 March of the following year.
For a unit that will contain 14 CO2e(tonnes) or more, the intended operator must
inform the supervisory authority of the installation well in advance.

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN
Page 4
Continuous product development may give rise to specification changes without notice.
1.8 Extended warranty
In cases in which the equipment delivered falls under a 5-year warranty, in accord-
ance with ABM 07 with supplement ABM-V 07 or in accordance with NL 01 with
supplement VU03, the IV Produkt Service and Warranty Manual is supplied with the
product.
In order to lay claim to an extended warranty, a complete, documented and signed
IV Produkt Service and Warranty Manual must be presented.
1.9 Spare parts
Spare parts and accessories for this unit are ordered from your nearest IV Produkt
sales representative. When ordering, state the order number and designation.
These are stated on a data label, axed to each component.
A separate spare parts list is supplied with the unit.
1.10 Dismantling and decommissioning
When an air handling unit is to be dismantled, separate instructions must
be followed, see Air handling unit, dismantling and decommissioning under
Documentation at ivprodukt.com.

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN Page 5
Continuous product development may give rise to specification changes without notice.
2 Technical description
2.1 Reversible heat pump ThermoCooler HP
ThermoCooler HP is a series of integrated speed-controlled reversible heat pumps
with stepless cooling and heating power. The units are intended to be used to cool
or heat supply air in properties.
ThermoCooler HP is designed to be installed together with IV Produkt AB air
handling units. The reversible heat pump should not be used as a standalone unit.
The heating pump function takes the heat content of the extract air and reuses it,
supplying the same heat to the ventilation unit’s supply air.
ThermoCooler HP
reversible heat
RotorFan and filter
section
(extract air fan)
Fan and filter section
(supply air fan)

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN
Page 6
Continuous product development may give rise to specification changes without notice.
Cooling circuit function
Cooling mode
The cooling function moves the heat content of the outdoor air to the exhaust air,
where it can be emitted.
From the compressor (C1), the refrigerant is pushed as hot gas to the condenser
(the extract air coil) where the heat is emitted. The refrigerant condenses from gas
to liquid when it is cooled by the extract air.
The refrigerant passes the pressure reducing expansion valve (EV1) and undergoes
a phase transformation in the evaporator from liquid to gas (the refrigerant
evaporates).
Inside the evaporator (the supply air coil), the refrigerant absorbs the heat required
for phase transformation. The heat is taken from the supply air which is thus cooled.
The cold refrigerant in gaseous form is drawn back into the compressor (C1)
where it is compressed and thus heated. The gas is also used for cooling the
compressor’s electric motor. The refrigerant now contains the heat from the supply
air, the compressor’s motor heat and the compression heat.
TCH - ThermoCooler HP
Extract air coil
(condenser/evaporator)
Supply air coil
(condenser/evaporator)
Exhaust
air
Extract
air
Outdoor
air
Supply
air
Flow chart for refrigerant system ThermoCooler HP (size 100-240)
Heating mode
The function of heating mode is similar to that of cooling mode. The dierence
between the cooling and heating modes is that the 4-way valve is in the heating
position. This means that the extract air coil, which was a condenser in cooling
mode, is now an evaporator. Conversely, the supply air coil becomes a condenser.
The extract air is the heat pump’s energy source. When the extract air meets the
extract air coil, it is cooled since the coil functions as an evaporator. From the
evaporator, the refrigerant moves to the compressor, where it is compressed. The
refrigerant then moves to the supply air coil, where the energy from the extract air
and the compressor is released. The energy remaining downstream of the heat
pump is then recovered in the rotor.
These two recovery systems combined give a very high degree of eciency.
Since the rotor requires less energy to run than the compressor system, this will be
in the first instance. The compressor will only start when the rotor’s energy recovery
is insucient to heat the supply air.
C1 Compressor
ET1 Temperature sensor
EP1 Pressure sensor, low pressure
EV1 Expansion valve
FO Frequency inverter
FWV1 4-way valve
HP1 High pressure switch
OP1 Pressure sensor, high pressure
OT1 Temperature sensor, hot gas
LT11 Temperature sensor
liquid line, cooling
LT12 Temperature sensor
liquid line, cooling

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN Page 7
Continuous product development may give rise to specification changes without notice.
Compressor
ThermoCooler HP is equipped with a speed-controlled PM scroll compressor.
Depending on its size, ThermoCooler HP may also be equipped with a fixed
compressor that is step-linked to the speed-controlled compressor.
In the event of an increased power requirement, the frequency inverter will increase
the speed of the compressor.
When there is more than one compressor, the speed-controlled compressor
will start at minimum speed, which will then increase in parallel with the power
requirement up to the maximum speed. If further power is required, the fixed
compressor will start up as the speed-controlled compressor lowers the speed
before then increasing to maximum speed again.
The function is reversed where less cooling is needed.
Compressor protection
In the event of an alarm initiated by the control equipment or the safety circuit, the
compressor stops and an alarm indication is given. The alarm can be read on the
Climatix display or the Carel unit on the unit’s circuit board.
In the event of an alarm, correct the fault and then reset the alarm. If alarm trips
repeatedly, an authorised refrigeration service company must be called in.
The reversible heat pump will primarily trip alarms for the following errors:
• High pressure in the system, manual reset on pressure control HP1
• Low pressure in the system
• Alarm from frequency inverter
• Incorrect phase sequence (size 600-980).
Function
ThermoCooler HP is interlocked across the ventilation unit. If any of the fans stop,
the reversible heat pump will also stop. The ThermoCooler HP unit will not start
unless the minimum flow is achieved. The same applies if there is auxiliary heating.
The interlock and demand signal is sent via Modbus.
Circuit board
The circuit board for the unit contains:
• Main switch
• Fuses
• Control unit
• Any control unit for expansion valve next to fixed compressor.
The circuit board is installed inside the unit and is internally prewired and tested at
the factory.

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN
Page 8
Continuous product development may give rise to specification changes without notice.
3 Wiring instructions
3.1 ThermoCooler HP
Power supply
ThermoCooler HP is powered separately as shown in the diagram below.
For recommended external fuse “7 Technical data” page 17.
L1
N
PE
L2
L3
8
2
4
6
7
MS1
1
3
5
POWER SUPPLY
3×400V~50Hz
NB:
A residual current circuit breaker should not be used since the unit
has a built-in frequency inverter.
In the event that the decision is nevertheless made to use a residual current circuit
breaker, we recommend a 300 mA, type B residual current circuit breaker specially
adapted for the frequency converter.
A 300 mA, type B residual current circuit breaker oers fire protection – not
personal protection.
Communication with Climatix
Communication with the AHU (Envistar Flex) Climatix control system is via Modbus.
The connection between Carel and Climatix is done with preinstalled quick
connector.
Carel
J6 Modbus
Thermo-
Cooler HP
–
+
0GND
Climatix
RS485
B-
A+
REF
Envistar Flex
control cabinet
Green
Yellow
Grey
Principle of communication between Carel and Climatix via Modbus
Trim heater (optional)
Electric battery for trim heating is optional. It is delivered integrated and prewired
with quick connectors if chosen when ordering ThermoCooler HP.
Quick connectors for trim heater

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN Page 9
Continuous product development may give rise to specification changes without notice.
If the trim heater is retrofitted, the following connection instructions apply.
All connections are made internally in ThermoCooler HP.
Quick
connect
Quick
connect
Quick
connect
White
Brown
Green
Yellow
Preinstalled from the factory,
3 quick connectors (male)
At site installation, to terminal
block, 3 quick connectors (female)
3.2 Envistar Flex unit parts
Quick connectors
Connection between unit parts in the air handling unit is carried out by connecting
the preinstalled quick connectors using the markings on the cables for guidance.
Setting Climatix
The following settings for Climatix are made at the factory.
Main menu / Configuration / Configuration 1
Heat recovery Wheel
Heating TCHP
Electrical heating TCHP
Cooling TCHP
Main menu / Configuration / Configuration 2
Hrec clg recovery No
Tmp start No
Temp start/osstp blk None
Htg frost protect No
Heating pump No
Htg pump alarm No
Main menu / Configuration / Integration
Cooler type, Modbus Carel
No. of compressors 1 or 2
High pressure sensor Yes
Adv. communication Yes
Main menu / Configuration / Basic data
Pwr Elc before Sply.Fan (value dependent on output variant)

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN
Page 10
Continuous product development may give rise to specification changes without notice.
4 Operation
4.1 Commissioning rules
Commissioning may only be carried out by competent personnel and in accordance
with the following checklist. The validity of the product warranty is conditional on
the system having been correctly commissioned.
No modifications to the cooling circuit may be made during the warranty period
without the approval of IV Produkt. Follow the troubleshooting instructions in the
troubleshooting chart before contacting a service representative for servicing a unit
under warranty. This will prevent any unnecessary service calls.
The unit was designed and manufactured based on given operation cases
that must comply with the unit’s use for optimal function and a good operating
economy.
External circumstances should not be changed without checking that such changes
are within the unit’s intended area of operation.
4.2 Checklist commissioning ThermoCooler HP
The reversible heat pump must not be put into operation until all the items in the
checklist have been checked o.
1. Visually inspect the cooling unit for damage after transport and as-
sembly.
2. Check that the cooling unit is correctly positioned and that the open
space in front of the unit for servicing is sucient (1.5 x depth of the
unit, min. 1200 mm).
For more information, see the separate assembly instructions for each
unit series.
3. Check that the two drainage connections (evaporation water drains)
are connected for drainage via separate water traps. Check that the
drainage pipe slopes correctly to the drains. For more information,
see separate Envistar Flex assembly instructions.
4. Check that the incoming supply voltage, zero and earth are
connected (see Section 3).
5. Check that control cables are connected (see chapter 3).
6. Check that the automatic circuit breakers are set to the ON position
and switch on the voltage.
7. It is important that the oil inside the speed-controlled compressor
crankcase is warm before starting the unit. The crankcase heating
must be switched on long enough before the unit begins operating so
that the oil maintains a temperature of at least 30ºC. The maximum
warm-up time is approximately 2–3 hours. The temperature can be
measured externally at the bottom of the compressor.
8. Start the air handling unit (supply and extract air fans).

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN Page 11
Continuous product development may give rise to specification changes without notice.
9. Check that there are supply and extract air flows and that they have
been adjusted and recorded.
10. Test all control functions according to the air handling unit’s func-
tional description.
11. Start the cooling unit via the control unit according to the following
menu sequence:
%
000
IV Produkt
Demand:
083%
Status: OFFbyKEY
Inv
OFF
%
087
IV Produkt
Unit On/Off
Demand:
083%
Status: UnitOn
Inv
ON
Unit On/Off
Main Menu
1×
1×
1×
2×
On/Off Unit
For units in size 600-980 (2-circuit), the compressor for the second
circuit is dependent on the correct phase sequence. After 30
seconds, compressor 2 will start for a short while to check the phase
sequence. Check whether the alarm is displayed. If necessary, switch
two of the incoming phases.
12. Check that the start and cooling signal is shown in the display. Status
should be UnitOn and Demand should show a percentage value. If
UnitOn is not displayed and Demand is less than 10 per cent, the
setpoint should be temporarily changed to make start possible. Use
Climatix hand controller and go to Quick menu -> Setpoints/Settings
-> Setp.conf.heat. Adjust setpoint until ThermoCooler starts.
13. Check that the unit indicates a temperature change in the supply air,
note the operating data and check that no alarms are displayed.
15. Reset the setpoint and allow the unit to operate until it stops as per
the intended control function for the air handling unit.
NB: The time until restart should be at least 10 minutes.
16. Make sure that an inspection to detect leakage is carried out and that
an inspection report is drawn up; see “1.7 Handling of refrigerant”
page 3.

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN
Page 12
Continuous product development may give rise to specification changes without notice.
4.3 Cooling status
Status information can be read on the Climatix display
under Main menu/Unit/Cooling. The following will be
presented:
Climatix Value Explanation
Unit status UnitOn Status of cooling unit
Heating output signal x% Heating requirement from Climatix
cooling regulator
Cooling output signal x% Cooling requirement from Climatix
cooling regulator
Inverter signal output x.x% Frequency to the compressor
Compr. nbr Comp1
Compr. Sum alarm Normal
Compr. Gen. alarm >The alarm is displayed if there is a fault
with the inverter or compressor. In the
event of an alarm, see”6.2 Alarm infor-
mation for inverter and compressor” on
page 15 ".
****************************************
Compressor C1 output On/O Compressor operating mode
Suction temp C1 x.x°C Measured suction gas temp
Evaporation temp C1 x.x°C Calculated evaporating temp based on
low pressure
Low pressure C1 x.x bar Relative pressure from low pressure
sensor
Superheat C1 x.x K Measured superheating
High pressure C1 x.x bar Relative pressure from high pressure
sensor
Expansion valve 1 x.x% Expansion valve position
Condensation temp C x.x°C
Discharge x.x°C Temperature of output from compressor
Liquid line temperature x.x°C Temperature downstream of condenser
Subcooling x.x°C Measured supercooling

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN Page 13
Continuous product development may give rise to specification changes without notice.
5 Maintenance instructions
5.1 Service schedule
For service schedule, see operation and maintenance instructions for air handling
unit Envistar Flex.
5.2 Periodic inspection
The purpose of the maintenance instructions is to describe periodic inspection of
the unit and to show some simple checks that you can perform before calling in
support in the event of a fault.
Leakage inspection and registration
For information on the operator’s responsibility with regards to leakage inspection
and registration, see “1.7 Handling of refrigerant” page 3.
Visual check
Check:
1. The fins on the condenser/evaporator to detect mechanical deformations
2. The drip tray and drain with water trap (clean if necessary)
3. That the water trap (without non-return valve) is filled with water.
Cleaning
If the fins are fouled, they should be vacuumed from the inlet side. Alternatively, you
can blow them clean with compressed air from the outlet side. If they are severely
fouled, you can clean them with warm water mixed with dishwashing detergent that
will not corrode aluminium.
For more information, see Cooling coil, cleaning under Documentation
at ivprodukt.com.
Check function
Check that the reversible heat pump in the air handing unit is operating as it should
by temporarily lowering/increasing the temperature setting (setpoint).

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN
Page 14
Continuous product development may give rise to specification changes without notice.
6 Alarm management and troubleshooting
6.1 Troubleshooting in the event of an alarm
The alarms for the cooling circuits are presented on the control unit display.
To ascertain what has caused the alarm, follow the procedure below.
Inspection Possible cause Corrective action
Has the high pressure
switch tripped?
YES ⇒No or too low air flow across
the condenser
Check the air flow across the
condenser.
Rest the pressure switch manually.
Defective high pressure switch Check/replace
NO ⇓
Is the alarm
“118 Compr 1,
Low evaporation pres-
sure” or
“176 Compr 2, LowEvap-
Pressure” displayed?
YES ⇒Insufficient refrigerant volume Look for leakage, seal the leak and
top up with refrigerant
No or too low air flow across
evaporator
Check/adjust the flow
Defective expansion valve Check/replace
NO ⇓
Is the LED flashing red on
the frequency inverter?
YES ⇒Phase failure/voltage failure Check the 3-phase supply, measure
the incoming voltage.
Reset the frequency inverter by
switching off the voltage for 1
minute or more. Check that the
compressor is running without
dissonance.
Overload/defective stepless
compressor
Reset the frequency inverter by
switching off the voltage for 1
minute or more. Check that the
compressor is running without
dissonance.
NO ⇓
Is the alarm
“189 Phase Rotation
order”displayed?
YES ⇒Incorrect phase sequence for
supply voltage
Shut off voltage and switch two of
the incoming phases
NO ⇓
Is the alarm
“94 Drive
oine”displayed?
YES ⇒ThermoCooler HP does not
have supply voltage 3×400V
Connect supply voltage

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN Page 15
Continuous product development may give rise to specification changes without notice.
6.2 Alarm information for inverter and compressor
Alarm information is shown on the Climatix display (Main menu / Unit / Cooling /
Alarm) or the Carel display (press on the alarm symbol to show the alarm).
Alarm Climatix Explanation and corrective action
Cooling unit
Sum alarm Sum alarm, check alarm in Carel, see table below.
Alarm C1 R. pressure switch High pressure switch tripped or alarm for frequency inverter.
Alarm C1 EEV motor fault Fault on electrical connection to expansion valve.
Alarm C1 low pressure sensor Power cut or short circuit to low pressure sensor. Check EVD, cabling and sensor.
Alarm C1 suction gas sensor Power cut or short circuit to suction gas sensor. Check EVD, cabling and sensor.
Alarm C1 high pressure sensor Power cut or short circuit to high pressure sensor. Check EVD, cabling and sensor.
Alarm C1 low overheating Compressor stoppage caused by low overheating.
Alarm C1 LOP Compressor stoppage caused by low evaporation temperature.
Alarm C1 MOP Compressor stoppage caused by high evaporation temperature.
Alarm C1 communication EVD Fault on communication to EVD (expansion valve control).
Alarm C1 low suction gas temp Low suction gas temperature.
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Alarm Carel Explanation and corrective action
76 Drive MainsPhaseLoss
Check that all three phases are connected to the frequency inverter.
81 Drive U_phaseLoss
82 Drive V_phaseLoss
83 Drive W_phaseLoss
94 Drive oine No communication with the frequency inverter. Check that the frequency
inverter is energised with 3-phase 400V.
118 Compr 1, Low evaporation pressure Circuit 1, low evaporation temp/pressure. Check leakage in cooling circuit.
121 Compr 1, High pressure switch Circuit 1, high pressure switch tripped. Check air flow and fire damper.
172 Compr 2, Motor protector Circuit 2, motor protection alarm
174 Compr 2, High pressure switch Circuit 2, high pressure switch tripped. Check air flow and fire damper.
176 Compr 2, LowEvapPressure Circuit 2, low evaporation temp/pressure. Check leakage in cooling circuit.
180 Compr 1, High pressure switch Circuit 1, high pressure switch tripped. Check air flow and fire damper.
189 Phase rotation order Incorrect phase sequence gives incorrect rotation direction. Switch two of
the incoming phases.

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN
Page 16
Continuous product development may give rise to specification changes without notice.
6.3 Troubleshooting via symptoms
Symptom Possible cause Corrective action
Low cooling power - too
high temperature in the
cooled object
The power supply has been interrupted Check the control/safety switches and
fuses.
Separate supply not connected Connect supply
None or too low air flow across
evaporator
Check that nothing inhibits the air flow
The control equipment is incorrectly
preset/defective
Adjust the settings or replace the
equipment
Compressor is not op-
erating
The power supply has been interrupted. Check the control/safety switches and
fuses
Incorrect phase sequence (compressor 2) Switch two of the incoming phases
Compressor has opened a safety circuit Check and reset, if needed
Defective compressor Check/replace
Frost on the evaporator Expansion valve is defective Check/replace
Insufficient refrigerant volume Look for leakage, seal the leak and top
up with refrigerant
Low supply air flow Adjust the flow
6.4 Alarm reset
In the event of an alarm initiated by the frequency inverter or the safety circuit, the
compressor stops and the sum alarm relay is energised. The alarm is displayed in
the control unit menus “Operating information, compressors” and “Status: Alarm”.
In the event of an alarm, take corrective action to correct the fault, and then press
the “Alarm reset” button on the control unit for at least 3 seconds. If the safety
circuit alarm trips repeatedly, an authorised refrigeration service company must be
called in.
%
000
IV Produkt
Demand:
083%
Status: OFFbyKEY
Inv
OFF
Reset alarm
Operating status, compressor

Operation & Maintenance Instructions
ThermoCooler HP
DSTCHP.170418.01.EN Page 17
Continuous product development may give rise to specification changes without notice.
7 Technical data
7.1 Table air flow, cooling power, operating current, etc.
Size 100 150 190 240 300 360 480 600 740 850 980
Air flow min (a) m3/s 0.25 0.38 0.50 0.58 0.68 0.85 0.85 1.34 1.71 1.98 2.38
Air flow max (a) m3/s 0.95 1.61 2.12 2.48 2.91 3.64 4.61 5.75 7.34 8.47 10.05
Max cooling power (b) kW 13.2 21.3 27.1 29.1 40.1 48.3 65.1 81.7 99.5 113 129
No. of compressors units 1 1 1 1 1 1 1 2 2 2 2
Max operating current A 7.6 11 15 15 21 24 33 44 52 63 65
External fuse
protection (c) A 10 16 20 20 25 32 40 50 63 80 80
Refrigerant R410a kg 2.8 4.6 5.8 7.0 8.2 10.1 13.2 10.4+5.8 14.0+6.0 14.0+9.0 17.4+12.6
a) For units with dampers, F7 filter supply air, M5 filter extract air, SFPv values with NP rotor, supply air temp 20°C and
duct pressure 200 Pa (170+30 Pa). Max air flow calculated with a minimum 10% spare capacity for fans.
b) With outdoor temp 26°C, 50% RH and extract air temp 22°C.
c) Regarding reversible heat pump at 3×400V+N 50 Hz. Fuses with type C characteristics. The ventilation unit is fused
separately and the fuse protection size varies depending on selection of fan variants.
8 Ordering keys
8.1 Reversible heat pump
TCH -a-b-c-1-e-00 Reversible heat pump ThermoCooler HP
a - Size 100, 150, 190, 240, 300, 360, 480, 600, 740, 850, 980
b - Casing AA = Standard (class T3)
PA = ThermoLine low energy (class T2)
BA = Insulation to fire resistance rating EI 30
c - Output variant 2V = 2
e - Voltage 40 = 3×400V+N, 50Hz
8.2 Trim heater
TCHT-EV -a-0-c Electric heater trim heating
a - Size 100, 150, 190, 240, 300, 360, 480, 600, 740, 850, 980
c - Voltage 40 = 3×400V+N, 50Hz
Change history
DSTCHP.170418.01.EN First version

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