Marstair 600E/M, 600E, 600L Technical Manual

55208033-08

TECHNICAL MANUAL

DX CASSETTE 600E/M, 600E & 600L

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INDEX

CONTENTS

PAGE

General. 2
Unit part numbers, dimensions & weights. 3
Features, optional accessories & system matches 4
Performance data. 5
Airflows & discharge velocities. 6
Sound power & sound pressure levels. 6
Branch duct (spigot) data. 7
Electrical data: Loads & fuses 8-9

Installation.

10

Contents & dimensions. 10

Removal of chassis & mounting. 11

Pipework & restrictor sizes. 12
Remote controllers. 13-14
Fan speed selection & interconnecting wiring diagrams. 15-17
Reinstalling chassis & fascia. 18

Condensate drain piping. 19
User maintenace. 21
Fault finding. 22-23
Component identification. 24-25

GENERAL

1. TEV Ltd recommend that personnel working on this equipment be skilled and fully conversant with

the appropriate Air Conditioning, Refrigeration and Electrical practices and have sound knowledge
of current Industrial Safe Working practices.

2. These units consist of 600E/M cassettes using remote wired controllers, 600 L cassettes using
infrared controllers and 600 E cassettes using infrared controllers.

3. These units contain live electrical components, moving parts and refrigerant under pressure.
Always site out of reach of children and protect from vandalism.

4. The data plate only gives information for the 600 unit.

5. Refer to the outdoor unit manual / installation instructions for evacuating and adding refrigerant.

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PART NUMBERS

Fascia

55222000 (all models)

Fitted with 0.5m lift pump

Fitted with 5m condensate pump

600E/M model 20 40 60

20 40 60

Part number

55222001 55222002 55222003

55222004 55222005 55222006

600L model 20L 40L 60L

20L 40L 60L

part number

55222007 55222008 55222009

55222022 55222023 55222024

600E model 20E 40E 60E

20E 40E 60E

Part number

55222013 55222014 55222015

55222016 55222017 55222018

NOTE: The fascia is shipped separate from the chassis and they are ordered on separate part numbers.

DIMENSIONS AND WEIGHTS

UNPACKED (with fascia fiitted).

600

Model

20 40 60

Height mm

335 335 335

Width mm

675 675 675

Depth mm

675 675 675

Weight kg

21 23 25

PACKED

600 Chassis

600 Fascia

Model

20 40 60

20 / 40 / 60

Height mm

360 360 360 100

Width mm

810 810 810 760

Depth mm

610 610 610 760

Weight kg

22 24 26 4

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FEATURES AND OPTIONAL ACCESSORIES

STANDARD

600E/M 600L 600E

De-ice thermostat/sensor STD STD STD
3 fan speed combinations STD STD STD
Remote infrared control --- STD STD
Remote hard wired control STD --- STD

0.5m lift pump STD STD STD
5m condensate pump STD STD STD
Programmable timer --- STD STD
Long life cleanable filter STD STD STD
Remote temperature sensor STD --- ---

OPTIONS
NOTE: These kits are easier to fit before installation, some may also be factory fitted.

SYSTEM MATCHES

Air Conditioning Systems

Heat Pump Systems

600 (ALL)

MCU+ or DCU+

600L / 600E MHPUL / MHPUE / DHPUE

20 15 20 15
20 20 40 30
20 30 60 50
40 30
40 40
40 50
60 40
60 50
60 60

NOTE: Table above is for 600 units matched with Marstair outdoor units.

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PERFORMANCE DATA (kW)

NOTE THAT THERE ARE 3 SPEED RANGES OF LOW, MEDIUM AND HIGH

Range 3 = highest for maxium duties
Range 2 = medium for normal operations

Range 1 = lowest for minimum noise levels

UK CONDITIONS
ROOM 21°C/15°C

AMBIENT 27°C/19°C

EUROVENT

(NEMA)

ROOM

27°C/19°C

AMB 35°C/24°C

TROPICAL

ROOM

29°C/19°C

AMB 46°C/24°C

RANGE 3

LOW MEDIUM HIGH HIGH HIGH

RANGE 2

LOW MEDIUM HIGH

RANGE 1 LOW MEDIUM HIGH

600

(ALL)

MCU+

or

DCU+

TOT SHR SENS TOT SHR SENS TOT SHR SENS TOT SHR SENS TOT SHR SENS TOT SHR SENS TOT SHR SENS

20 15 1.77 0.75 1.33 1.82 0.80 1.46 1.87 0.85 1.59 1.91 0.92 1.75 1.94 1.00 1.94 2.13 1.00 2.13 2.05 1.00 2.05
20 20 2.28 0.69 1.58 2.35 0.72 1.70 2.40 0.76 1.83 2.45 0.81 1.99 2.50 0.88 2.19 2.65 0.93 2.47 2.28 1.00 2.28
20 30 N/A* 2.63 0.70 1.84 2.71 0.73 1.97 2.78 0.77 2.14 2.85 0.83 2.35 3.03 0.86 2.61 2.37 1.00 2.37
40 30 3.13 0.67 2.09 3.29 0.68 2.25 3.40 0.71 2.41 3.52 0.74 2.61 3.60 0.79 2.84 3.86 0.81 3.14 3.06 1.00 3.06
40 40 3.50 0.66 2.30 3.69 0.67 2.47 3.84 0.69 2.63 3.98 0.71 2.83 4.09 0.75 3.06 4.27 0.77 3.30 3.84 0.93 3.57
40 50 N/A* 4.59 0.66 3.01 4.83 0.67 3.22 5.05 0.69 3.47 5.27 0.72 3.78 5.66 0.72 4.08 4.73 0.89 4.20
60 40 3.60 0.66 2.39 3.79 0.68 2.58 3.92 0.70 2.76 4.06 0.73 2.98 4.18 0.78 3.25 4.33 0.81 3.52 3.87 0.99 3.84
60 50 4.35 0.65 2.82 4.66 0.66 3.06 4.89 0.67 3.26 5.14 0.68 3.51 5.35 0.71 3.81 5.72 0.72 4.09 4.80 0.88 4.20
60 60 N/A* 4.97 0.65 3.24 5.24 0.66 3.45 5.51 0.67 3.71 5.78 0.70 4.02 6.26 0.69 4.32 5.18 0.84 4.36

* Cannot be used on low speed

Rated at BS2852: Part 1: 1982: UK condition C; NEMA condition A; Tropical condition B

HEAT PUMP
a. Cooling (MAX speed outdoor unit fan)

UK CONDITIONS
ROOM 21°C/15°C

AMBIENT 27°C/19°C

EUROVENT (NEMA)

ROOM 27°C/19°C

AMBIENT 35°C/24°C

RANGE 3

LOW MEDIUM HIGH HIGH

RANGE 2

LOW MEDIUM HIGH

RANGE 1 LOW MEDIUM HIGH

600 (ALL)

MHPUL
MHPUE
DHPUE

TOT SHR SENS TOT SHR SENS TOT SHR SENS TOT SHR SENS TOTAL SHR SENS TOTAL SHR SENS

20 15 1.77 0.75 1.33 1.82 0.80 1.46 1.870.85 1.59 1.91 0.92 1.75 1.94 1.00 1.94 2.23 1.00 2.23
40 30 3.13 0.67 2.09 3.29 0.68 2.25 3.400.71 2.41 3.52 0.74 2.61 3.60 0.79 2.84 3.86 0.81 3.14
60 50 4.35 0.65 2.82 4.66 0.66 3.06 4.890.67 3.26 5.14 0.68 3.51 5.35 0.71 3.81 5.72 0.72 4.09

b. Heating (Room 20°C/12°C, outdoor unit fan at MAX speed)

HEATING OUTPUT AT 7°C AMBIENT

(EUROVENT)

HEATING OUTPUT AT -1°C AMBIENT

RANGE 3 LOW MEDIUM HIGH LOW MEDIUM HIGH
RANGE 2 MEDIUM HIGH MEDIUM HIGH
RANGE 1 HIGH HIGH

600 (ALL)

MHPUL
MHPUE
DHPUE

kW COP kW COP kW COP kW COP kW COP kW COP

20 15 2.06 2.50 2.07 2.52 2.13 2.60 1.58 2.10 1.68 2.20 1.72 2.23
40 30 2.92 2.70 2.98 2.75 3.46 3.23 2.30 2.30 2.40 2.40 2.60 2.60
60 50 5.48 2.48 5.68 2.58 5.71 2.89 4.42 2.31 4.64 2.31 4.75 2.59

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AIRFLOWS

RANGE 3

LOW SPEED MEDIUM SPEED HIGH SPEED

RANGE 2

LOW SPEED MEDIUM SPEED HIGH SPEED

RANGE 1 LOW SPEED MEDIUM SPEED HIGH SPEED
600 (ALL) m3/s m3/s m3/s m3/s m3/s

20 0.12 0.146 0.173 0.209 0.256
40 0.12 0.146 0.173 0.209 0.256
60 0.12 0.146 0.173 0.209 0.256

DISCHARGE VELOCITIES

SOUND POWER and SOUND PRESSURE

speed 1 = lowest, speed 5 = highest

SOUND POWER LEVELS

Frequency Hz

SOUND PRESSURE LEVELS

600 (ALL) SPEED 125 250 500 1K 2K 4K dBA

dBA NC

1 56.3 48.3 45.5 39.0 36.6 35.8 47 26 18
2 58.8 51.9 50.2 44.9 41.4 37.5 52 31 23
3 61.6 57.8 55.6 53.8 48.5 44.4 58 37 31
4 62.9 60.1 57.6 56.3 51.3 46.8 61 40 34

20

5 67.0 65.6 62.9 61.3 57.6 53.0 66 45 39
1 55.7 49.7 46.4 39.2 37.2 35.7 48 27 19
2 57.5 53.6 50.9 45.1 42.3 39.8 52 31 24
3 61.9 59.0 56.2 54.2 48.9 44.2 59 38 32
4 63.1 62.0 58.3 56.6 51.6 46.7 61 40 34

40

5 68.0 67.3 63.5 61.9 57.5 52.8 67 46 40
1 55.5 51.1 47.8 41.8 41.1 40.0 50 29 22
2 58.8 54.8 52.0 47.5 46.2 42.3 54 33 26
3 62.1 59.2 56.4 53.6 49.9 43.2 59 38 31
4 64.1 61.2 58.5 55.6 51.7 45.4 60 39 33

60

5 69.4 66.5 63.1 60.6 56.5 51.6 66 45 39

Sound Power Levels were obtained in conformance with BS 4196: Part 5: 1981. Values are shown in dB with a standard reference of 1 pW.
Sound Pressure Levels are dB relative to 2 x 10

-5

N/m2 and are calculated from results measured in anechoic conditions. Values relate to a

position of 3m away from the centre line of the unit, 1m down.

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BRANCH DUCT

The graphs below show the amount of conditioned air passed by a single branch duct.

FAN SPEED RANGE 1 FOR MINIMUM NOISE LEVELS

As shown on the graphs above, branch duct airflow can be be increased by blanking off the fascia side to
which the branch duct has been connected.

FAN SPEED RANGE 2 FOR NORMAL NOISE LEVELS

FAN SPEED RANGE 3 FOR MAXIMUM NOISE LEVELS

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ELECTRICAL DATA

Cooling data rated at EUROVENT (NEMA) conditions 27°C / 19.4°C indoor; 35°/24°C ambient.
Heating data rated at 20°C/12°C indoor; 7°C/6°C ambient

With MCU+

1 Ph 230V 50Hz 3 Ph 400V 50Hz

MODEL

COMBINATION

INPUT

FULL LOAD

AMPS

SYSTEM

MAX.

STARTING

CURRENT

INPUT

FULL LOAD

AMPS

SYSTEM

MAX.

STARTING

CURRENT

Cooling Heating Cooling Heating Cooling Heating Cooling Heating

600 (ALL) MCU+ kW kW AMPS AMPS AMPS kW kW A/PH A/PH* A/PH

20 15 1.2 2.0 6.4 8.3 23 -- -- -- -- -­20 20 1.4 2.0 7.4 8.3 28 -- -- -- -- -­20 30 1.7 2.0 8.6 8.3 37 1.7 2.0 4.1 8.3 19
40 30 1.7 2.0 8.6 8.3 37 1.7 2.0 4.1 8.3 19
40 40 2.2 2.0 10.7 8.3 51 2.1 2.0 5.3 8.3 23
40 50 2.1 2.0 9.4 8.3 59 2.0 2.0 4.7 8.3 27
60 40 2.2 2.0 10.7 8.3 51 2.1 2.0 5.3 8.3 23
60 50 2.1 2.0 9.4 8.3 59 2.0 2.0 4.7 8.3 27
60 60 2.5 2.0 10.5 8.3 63 2.4 2.0 4.7 8.3 33

With DCU+

1 Ph 230V 50Hz 3 Ph 400V 50Hz

MODEL

COMBINATION

INPUT

FULL LOAD

AMPS

SYSTEM

MAX.

STARTING

CURRENT

INPUT

FULL LOAD

AMPS

SYSTEM

MAX.
STARTING
CURRENT

Cooling Heating Cooling Heating

Cooling Heating Cooling Heating

600 (ALL) DCU+ kW kW AMPS AMPS AMPS kW kW A/PH A/PH* A/PH

20 15 1.4 2.0 6.6 8.3 25 -- -- -- -- --
20 20 1.5 2.0 7.4 8.3 29 -- -- -- -- --
20 30 1.8 2.0 9.0 8.3 37 1.9 2.0 4.1 8.3 19
40 30 1.9 2.0 9.0 8.3 37 1.9 2.0 4.1 8.3 19
40 40 2.4 2.0 11.3 8.3 51 2.4 2.0 5.2 8.3 24
40 50 3.0 2.0 11.8 8.3 52 2.5 2.0 5.0 8.3 23
60 40 2.4 2.0 11.3 8.3 51 2.4 2.0 5.2 8.3 24
60 50 3.0 2.0 11.8 8.3 52 2.5 2.0 5.0 8.3 23
60 60 3.2 2.0 15.1 8.3 61 3.2 2.0 6.4 8.3 26

With MHPUL/MHPUE

1 Ph 230V 50Hz 3 Ph 400V 50Hz

INPUT FULL LOAD AMPS INPUT FULL LOAD AMPS

MODEL

COMBINATION

STD.

MODEL

+ELECT
Heating

STD.

MODEL

+ELECT

Heating

SYSTEM

MAX.

STARTING

CURRENT

STD.

MODEL

+ELECT

Heating

STD.

MODEL

+ELECT

Heating

SYSTEM

MAX.

STARTING

CURRENT

600L / E MHPUL/E kW kW AMPS AMPS AMPS kW kW A/PH A/PH* A/PH

20 15 1.2 3.1 6.4 14.7 24 -- -- -- -- --
40 30 1.7 3.4 8.6 16.4 44 1.7 3.5 4.1 12.2 27
60 50 2.1 4.1 9.4 17.2 67 2.0 3.8 4.7 12.3 35

With DHPUE

1 Ph 230V 50Hz 3 Ph 400V 50Hz

INPUT FULL LOAD AMPS INPUT FULL LOAD AMPS

MODEL

COMBINATION

STD.

MODEL

+ELECT

Heating

STD.

MODEL

+ELECT
Heating

SYSTEM

MAX.

STARTING

CURRENT

STD.

MODEL

+ ELECT

Heating

STD.

MODEL

+ ELECT

Heating

SYSTEM

MAX.

STARTING

CURRENT

600E DHPUE kW kW AMP S AMPS AMPS kW kW A/PH A/PH* A/PH

20 15 1.4 3.3 4.9 12.9 24 -- -- -- -- --
40 30 1.8 3.7 8.9 16.9 45 1.8 3.7 4.1 12.1 27
60 50 2.5 4.4 11.8 19.8 59 2.5 4.3 5.4 13.2 32

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ELECTRICAL LOADS [ 230V 50Hz 1Ph (A) OR 400V 50Hz 3PhN (A/Ph)]

600 (ALL)

20 40 60

FAN MOTOR

0.5 0.5 0.5

LIFT PUMP (10 watts)

9mA 9mA 9mA

CONDENSATE PUMP (27.6 watts)

12.5mA 12.5mA 12.5mA

ELECTRIC HEATER (1kW) 4.2 4.2 4.2
ELECTRIC HEATER (2Kw) 8.3 8.3 8.3

FUSES

The system and its supply/interconnecting wiring must be protected by fuses, preferably High Rupture
Current (HRC) motor rated types (to BS EN60269) or miniature circuit breakers to (BS EN60898) or local
codes having similar time lag characteristics, that allow starting of the compressor yet still afford close
overcurrent protection under running conditions. The ratings below are for HRC motor rated fuses.

S= Standard units (no heaters) H= Electric heaters fitted

FUSES FOR ALL-ELECTRONIC SYSTEMS HAVING SEPARATE SUPPLIES

Provided that both indoor and outdoor units are electronic (ie. 600E matched with MHPUE or DHPUE) and
control cables between them are data cables, the units may be independently supplied and fused .

600

20E 40E 60E

1Ph Cool Only

5 5 5

1Ph with Electric Heating

10 10 10

FUSES FOR SYSTEMS WITH 1 PH

230V OUTDOOR UNITS (A)

600

20 40 60

MCU+

S H1 H2 S H1 H2 S H1 H2

15 16 16 16
20 16 16 16
30 16 16 16 16 16 16
40 20 20 20 20 20 20
50 16 16 16 16 16 16
60 20 20 20

DCU+ S H1 H2 S H1 H2 S H1 H2

15 16 16 16
20 16 16 16
30 16 16 16 16 16 16
40 20 20 20 20 20 20
50 25 25 25 25 25 25
60 25 25 25

MHPUE (L) S H1 H2 S H1 H2 S H1 H2

15 16 16 16
30 16 20 20
50 16 25 25

DHPUE S H1 H2 S H1 H2 S H1 H2

15 16 16 16
30 16 25 25
50 20 32 32

FUSES FOR SYSTEMS WITH 3PH

400V OUTDOOR UNITS (A/Ph)

600

20 40 60

MCU+

S H1 H2 S H1 H2 S H1 H2

30 10 10 10 10 10 10
40 10 10 10 10 10 10
50 10 10 10 10 10 10
60 10 10 10

DCU+ S H1 H2 S H1 H2 S H1 H2

30 10 10 10 10 10 10
40 10 10 10 10 10 10
50 10 10 10 10 10 10
60 16 16 16

MHPUE S H1 H2 S H1 H2 S H1 H2

30 10 16 16
50 10 16 16

DHPUE S H1 H2 S H1 H2 S H1 H2

30 10 16 16
50 10 20 20

MHPUL S H1 H2 S H1 H2 S H1 H2

30 10 16 16
50 10 16 16

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30

306

≥

580 x 580

610

300

675 x 675

187.5 187.5

INSTALLATION

CONTENTS

DIMENSIONS

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REMOVAL OF CHASSIS

600L & 600E

600E/M

MOUNTING

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PIPEWORK

HEATPUMP CONDITIONS

= NO RESTRICTOR CHANGE

NEEDED

Heat pump cooling conditions

MHPUE

IMAGE

600

COOLING

RESTRICTOR

FITTED

UK

CONDITIONS

NEMA

CONDITIONS

Heating

restrictor

fitted into the

expansion

assembly

15 20 033

 

035

30 40 040

 

039

50 60 052 051 051 041

Heat pump cooling conditions

DHPUE

IMAGE

600

COOLING

RESTRICTOR

FITTED

UK

CONDITIONS

NEMA

CONDITIONS

15 20 032

 

027

30 40 039

 

037

50 60 049

 

041

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REMOTE CONTROLLER

ON

Fan control is
temperature
dependent in
all operating
modes

Changeover
between
normal
operation and
energy saving
mode

Changeover
activated
when contact
of switch is
closed (NO)

Frost
protection
disabled

1K in heating
mode, 0.5K in
cooling mode

2K

OFF

Fan control in
normal
operation is
temperature
independent

Changeover
between
normal
operation and
standby

Changeover
activated when
contact of
switch is
opened (NC)

Frost
protection
enabled

4K in heating
mode, 2K in
cooling mode

5K

Function

Fan control

Operating
mode
changeover via
external switch

Action of
switch for
externally
operated mode
changeover

Standby

Switching
differential

Dead zone in
normal
operation

Switch 1 2 3 4 5 6

█ =Factory setting

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600

600

POWER - TO SUIT SUPPLY FUSE

INTERNAL

SIGNAL - 230 V (0.75 - 2.5 mm²)

SIGNAL - 230 V ( - 2.5 mm²)

0.5

C

PENLPE N L

PE N L

C

3

PENL1 L2 L3

L / L1

3 PE N L

C

PE N L

FUSED SUPPLY (230V 1Ph 50Hz)

FUSED SUPPLY (400V 3Ph 50Hz)

N 7 53 4

L Q2Q3 Q1Y11 Y21NMB1

OPTIONAL REMOTE RETURN AIR SENSOR

(97200212)

97200212

6 N 72 53 4

30

25

20

15

10

L Q2Q3 Q1Y11 Y21NMB1

6

1Ph MCU+ / DCU+ 3Ph MCU+ / DCU+

30

25

20

15

10

LOW

MEDIUM

HIGH

Factory
Settings

FAN SPEED SELECTION

INTERCONNECTING WIRING

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230 V 50 Hz

<10 V DATA

+

0.75mm² MAX

230 V 50 Ø

<10 V DATA

MHPUE / DHPUE

OR INDEPENDENT FUSED SUPPLY

PE

PENNL1 L1

1Ø MHPUE / DHPUE

PCBA

DATA

OK

PENL1

1Ø DCU+ / MCU+

600E

600E

600E

600E

L1NPE

3 PE N L1

C PE N

DATA

21

FUSED SUPPLY (230V 1Ø 50Hz) FUSED SUPPLY (230V 1Ø 50Hz)

3Ø DCU+/ MCU+

PENL1 L2 L33 PE N L2L2L1

L1

C

PE N

FUSED SUPPLY (400V 3Ø 50Hz)

L2

DATA

21

OR INDEPENDENT FUSED SUPPLY

L1

3Ø MHPUE / DHPUE

PENL1L1 L3PE N

PCBA

DATA

OK

FUSED SUPPLY (400V 3Ø 50Hz)

L2 L2

L1

55200301 EMC TERMINATION GLAND

BMS

BMS +
ALARM

NETWORK

x 3

x 1 x 1

x 2

x 2

x 1

x 1

53800402

<10 V
DATA

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NOTE: Refer to page 9 for fuse ratings.

230 V 50 Hz

<10 V DATA

+

0.75mm² MAX

230 V 50 Ø

<10 V DATA

MHPUE / DCUE / DHPUE

PENL1

1 MCU+ / DCUE

ø

PE N L1

PE N L

3

FUSED SUPPLY (230V 1Ø 50Hz)

600L

600L

600L

600L

600L

600L

600L

600L

3 MCU+ / DCUE

ø

PENL1 L2 L33 PE N L2 L1

L

PE N

FUSED SUPPLY (400V 3Ø 50Hz)

3 MHPUL

ø

OK

PENL1 L2 L3PE N L2 L1

L

PE N

SS

S S

1 3

7

FUSED SUPPLY (400V 3Ø 50Hz)

PE PENNL1 L1

1 MHPUL

ø

OK

NPE

SS

S S

1

1

1

3

C

C

7

RV

RV

FUSED SUPPLY (230V 1Ø 50Hz)

L

C

RV

C

RV

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x 4

FITTING THE FASCIA

600 L & 600 E

4

600E/M

DI4F

D

I4F

☺







☺

CFD

C

FD

☺

600E/M 600 E600 L

REINSTALLING THE CHASSIS

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19/25

55208033-08

CONDENSATE DRAIN PIPING

Heronhill - for all your Marstair requirements

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20/25

55208033-08

(Cold)

USER MAINTENANCE

ISOLATE THE UNIT ELECTRICALLY BEFORE COMMENCING ANY WORK

We recommend that in order to maintain maximum efficiency of this unit, it’s important that the filter behind
the return air grille is cleaned regularly.

THE UNIT SHOULD ALWAYS BE USED WITH A FILTER. FAILURE TO DO SO WILL CAUSE A
DECLINE IN UNIT PERFORMANCE AND MAY RESULT IN MALFUNCTION.

It is recommended that in order to prolong life and maintain performance of the unit, it is regulary serviced by
a TEV installer / dealer.

Heronhill - for all your Marstair requirements

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FAULT FINDING

CONDITION POSSIBLE CAUSE ACTION

A Indoor fan motor will not run No electric supply at socket or switched fuse box

Check fuse rating and replace if necessary. Check

for loose electrical connections
Unit wiring fault Check wiring and connections
Fan motor capacitor defective Replace if faulty
Fan motor defective Replace if faulty
Internal fuse blown Clear fault and replace fuse

B Inadequate cooling or heating Dirty evaporator fins/filter Clean if blocked

Evaporator motor not running As in section A

Refrigerant shortage or excess

Check for leaks. Repair, evacuate and recharge or

check for high head pressure and recover refrigerant

if necessary
Faulty or incorrectly set thermostat Replace if faulty
Dirty condenser Clean if necessary
Faulty compressor Replace
LP cutout circuit open (if LP fitted) Check as refrigerant shortage or excess

C Compressor and outdoor fan motor LP cutout circuit open (if LP fitted) Check as above

will not run No electric supply at socket or switch fuse box

Check fuse rating and replace if necessary. Check

for loose electrical connection.
Unit wiring fault Check wiring and connections
Capacitor, thermostat, relay or overload defective Replace if faulty
Compressor failure Replace if faulty
Controls not set properly Check and rectify
Off cycle delay operating If applicable, wait 3 minutes
High condensate level detected See G
Compressor runs, outdoor fan doesn't Pressure at sensor <200psig Normal: or short of gas

D System runs for long periods and will Unit underrated for conditioned area Check heat load against capacity

not cycle Thermostat not operating correctly Check wiring, position of phial and operation
Refrigerant shortage

Check for leaks. Recover, repair, evacuate and

recharge
Indoor coil dry or partly sweating Dirty condenser Clean fins if necessary

E Indoor coil frosting Refrigerant shortage

Check for leaks. Recover, repair, evacuate and

recharge
Dirty evaporator fins/filter Clean if blocked

Running in cool ambient without a head pressure
controller

Fit head pressure controller
If room temperature is also low Thermostat set too low or cooling permanently Reset or replace

F Noisy unit Fan fouling cowl (outdoor unit) Realign fan

Worn motor bearing Replace motor
Casing or piping vibration Check cause and rectify
Loose parts or mounting Find and tighten
Bent fan blade Replace fan

G Water leaking from unit Blocked drain or filter Clear obstruction

Units with lift pump or condensate pump No supply to pump or loose connection Secure the supply
Pumping slowly Check drain pipes; if clear, replace pump
Pump windings shorted Replace pump
Fouled sensor (5m condensate pump only) Clean sensor

H Pump always runs Faulty sensor or pcb Replace sensor or pcb

I No heating Controls not set for heating Reset

Unit wiring fault Check wiring and connections
Dirty evaporator fins/filter Clean
Faulty thermostat Check for signal; replace if faulty
Faulty heater element Replace
Faulty heater cutout Replace, (check for short circuiting)
Reversing valve jammed A light tap may free it; preferably replace

J

Overload tripped on three phase
units

High voltage supply Max rated voltage 254v -- check supply
Compressor failure Replace
Fuses blown

Replace fuses and investigate reason for fuses
blowing

K Outdoor unit does not operate No mains supply

Check fuse rating and replace. Check for loose
electrical connections

Supply below 187V Check supply
Isolator switched off Turn isolator on
Internal fuse blown Check fuse and replace
Data wires disconnected Reconnect data wires
No command signal Check indoor unit
Off cycle delay operating Wait in cooling for 3 minutes

Heronhill - for all your Marstair requirements

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SPECIFIC FAULT DIAGNOSIS FOR L UNITS

CONDITION POSSIBLE CAUSE ACTION

Check for alarms

i LEDs flashing - see table below

ii

If NO external connections are made to alarm terminal 5, the presence of an alarm condition can be tested for by checking for mains voltage at
terminal 5; full mains voltage = Alarm; less than mains voltage = Clear.

The outdoor unit can be caused to operate for test purposes by temporarily linking live directly to terminal 3
(up to 20 seconds delay)

L Outdoor unit runs continually at high Charge link still fitted Remove charge link

speed MHPUL in heating Normal
Minimum speed adjustment set too high Reset minimum speed

If all external devices test O.K. the outdoor unit pcb must be replaced

M No LED's lit or flashing Unit commanded to be OFF Transmit 'ON'

No mains supply or internal fuse blown. (Fuse F2
on internal control board blown during configuring)

Check electrical supply and fuses

Fan motor plug disconnected Reconnect fan motor plug
Motor internal thermal protector operated Check motor and rectify
Cables to fascia not connected Reconnect
Circuit board fault Check circuit board and replace
High water level Check pump circuit (if fitted)

N All LED's lit, one flashing Temperature sensor problem See table below

Resistor problem (non MHPUL) Check resistor connected
Outdoor sensor problem (MHPUL)

Replace outdoor unit sensor/check
interconnecting wiring

P

Indoor unit continues after stop/off

Overrun of 30 seconds in heating Normal

Q

Unit will not respond to infrared commands.

Battery discharged Replace battery

Handset corrupted Reset

R

Unit does not switch on/off at
intended times

Power cut has occurred

Send any command from the handset to
synchronise the timer

S

Unit not running in intended
mode/temperature

Power has been shut off for three or more days,
unit is exercising default programme

Use handset retransmit button

T

Fan does not run at the intended
speed

Heat Pumps Only

Fan runs at low speed until indoor coil is warm,
then changes to intended speed

U Short cycles between cool and heat System oversized for room Use cool or heat programmes NOT 'Auto'

V

First operation, room is overcooled
or overheated by 2°C

Set point temperature reverts to normal after
deadband is reached or 20 minutes of
operation

Normal

W Handset will not transmit Heating commands Incorrectly configured - see page 23

Any commands Battery flat

X Compressor runs on Automatic minimum run time of 1.5 minutes Normal

HANDSET

If the handset fails to respond to button operations, disconnect and then reconnect the battery.
The previous programme state is retained in the memory for a few seconds provided none of the user buttons are pressed.

LED STATUS AND ALARM INDICATIONS

Cool Dry Fan Heat DIAGNOSTICS

D I 4 F

Green Red Red Amber

OFF OFF OFF OFF

No power, manual OFF, timed OFF, condensate
high level, fault in condensate control

ON OFF ON OFF Cooling mode selected
ON OFF ON BLINKS AUTO - predominantly cooling

OFF OFF ON ON Heating mode selected

BLINKS OFF ON ON AUTO - predominantly heating

OFF OFF ON OFF Fan mode selected
OFF ON ON OFF Dry mode selected
OFF OFF OFF BLINKS Outdoor unit defrosting

Diagnostics

OFF OFF BLINKS x 4 OFF Room sensor missing
OFF OFF BLINKS x 4 OFF Indoor coil sensor missing
OFF BLINKS BLINKS x 4 OFF Heat pump only, outdoor coil sensor missing

BLINKS OFF BLINKS x 1 OFF Compressor overload

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SPECIFIC FAULT DIAGNOSIS FOR E UNITS

A fully electronic system comprising 600 E with MHPUE or DCUE communicates between the units by digital codes. Signals are transmitted every 10
seconds, therefore a delay of up to 10 seconds could occur before the system responds to a command. Similarly if the communication link is broken, the
outdoor unit will shut down within 15 seconds. To reset: Switch the mains off to both indoor and outdoor units to reset the microprocessor; the current
programme is retained in the indoor pcb memory.

Check for alarms i.e.

i Audible alarm or LEDs flashing - see table below

ii

If NO external connections are made to alarm terminal 5, the presence of an alarm condition can be checked for by testing continuity between L and
5; Alarm = 220ohms, Clear = open circuit. WARNING: All parts of the circuit are at high voltage, if any external connections are made to terminal 5,
the continuity meter will be damaged

The outdoor unit can be forced to operate for test purposes by temporarily linking live directly to terminal 3
(up to 20 seconds delay)

L Outdoor unit runs Charge link JP6 still fitted Remove JP6 charge link

continually at high speed MHPUE in heating Normal
Minimum speed adjustment set too high Reset minimum speed

If all external devices appear O.K. the pcb may need to be replaced

M No LED's lit or flashing No mains supply or internal fuse blown Check electrical supply and fuses

Fan motor plug disconnected Reconnect fan motor plug
Motor internal thermal protector operated Check motor and rectify
Ribbon cable to fascia not connected Reconnect
Receiver pcb fault Check circuit board and replace

N

Regular audible pulsed signal -
all LED's lit

Indoor temperature sensor problem

Disconnect data link to identify which unit, if fault
clears it is outdoor unit

Outdoor sensor problem Replace outdoor unit sensor

O

Indoor unit continues after stop/off
command

Overrun of 30 seconds in heating NORMAL

P

Unit will not respond to infrared
commands.
No audible answer signal

Handset not plugged into wall bracket (if
appropriate). Fault in connections between wall
bracket and indoor unit

Plug in correctly and check connections

Battery discharged Replace battery
Operating in charge mode Remove charge link from outdoor unit

Q

Unit answers infrared commands
with double audible signal

Communications not yet established. Wait 2 minutes
from power up

If electric heater is known to be fitted, double signal
indicates open circuit element or thermal protector

Demanded mode not available

Double signal in response to on/off command
indicates under time control

R

Sounder beeps and LED(s) flash 0.5s
ON, 0.5s OFF

Warning of alarm status See table below

S

All LED's lit and continuous audible
signal

Microprocessor fault Replace indoor unit pcb assembly

T Short cycles between cool and heat System oversized for room

Use cool or heat programmes NOT 'Auto' and set to
lower speed

HANDSET
If the handset fails to respond to button operations, disconnect and then reconnect the battery.
The previous programme state is retained in the memory.

LED STATUS AND ALARM INDICATIONS

Status display LED

Flash Rate

ON/OFF

(seconds)

Sounder Condition Status

Red Amber Green

C

ON OFF In Operation Normal

C F

ON OFF Heating Demand Normal

C

D

ON OFF Cooling Demand Normal

C

0.5 / 5.0 OFF Standby Normal

C

0.5 / 15 OFF Clock Controlled Standby Normal

C

2 x 0.5 / 15 OFF Setback Normal

C

0.5 / 0.5 OFF Filter Clean Advisable Normal

Alarm indications

F

0.5 / 0.5 BEEPS Network Warning Call Engineer

D 0.5 / 0.5 BEEPS High Condensate Level Call Engineer

C F

0.5 / 0.5 BEEPS Low Pressure Warning Call Engineer

C

D

0.5 / 0.5 BEEPS High Pressure Warning Call Engineer

C F D

0.5 / 0.5 BEEPS

Contactor Overload
Operated

Call Engineer

F D

0.5 / 0.5 BEEPS Outdoor Fan Fail Call Engineer

C F D

ON BEEPS Sensor Fault Call Engineer

Heronhill - for all your Marstair requirements

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COMPONENT IDENTIFICATION

CHASSIS ASSEMBLY

1 Top panel
2 Suspension bracket
3 Capacitor
4 Fan motor
5 5m condensate pump

6

5m condensate pump PCB
and filter

7 Heat exchanger
8 Coil blanking panel

9 Electric box cover
10 External electrics box
11 Chassis
12 Fresh air cover
13 Fan
14 Coil bracket
15 Heater bracket/clip
16 Fan cowl
17 Fan guard
18 Heater element
19 Heater cut out
20 Thermal fuse
21 Internal electrics cover
22 PCBA
23 Receiver board
24 Threaded bung
25 Pipe panel
26 Lift pump
27 Float switch
28 Lift pump PCB bracket
29 Lift pump condensate PCBA
30 Motor mounts

Heronhill - for all your Marstair requirements

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Fax: [phone]

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55208033-08

TEV LTD, ARMYTAGE ROAD, BRIGHOUSE, WEST YORKSHIRE, HD6 1QF. + 44 (0) 1484 405600 [phone]

[e-mail] www.marstair.com

TEL: FAX:

EMAIL: WEB:

FASCIA ASSEMBLY

1

LED lens/cover

8

Vane bearing

2

Fascia

9

Vane connector

3

Grille

10

Vane motor

4

Filter

11

Double yoke

5

Badge

12

Spider

6

Air deflector vane

13

Actuator arm

7

Vane end cap

Heronhill - for all your Marstair requirements

Tel: [phone]

www.heronhill.co.uk

Fax: [phone]