Carrier 40VM Series Bedienungsanleitung

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 19-40VM001-06 Printed in U.S.A. Form 40VM-1SM Pg 1 8-19 Replaces: New

Service Manual

40VM Series

Indoor Units and Controllers for

Variable Refrigerant Flow (VRF) Heat Pump System

TABLE OF CONTENTS

INDOOR UNITS................................................................................................................................................................................3

General Information.......................................................................................................................................................................3

Refrigerant Circuit.........................................................................................................................................................................5

Operating Temperature Range.......................................................................................................................................................6

Function and Control.....................................................................................................................................................................7

REMOTE CONTROLLERS............................................................................................................................................................23

Wireless Remote Controller.........................................................................................................................................................23

Address Setting............................................................................................................................................................................24

Wired Remote Controller.............................................................................................................................................................25

TROUBLESHOOTING...................................................................................................................................................................38

Error Code List............................................................................................................................................................................38

Wiring Diagrams.........................................................................................................................................................................39

Indoor Electric Control Box Details............................................................................................................................................50

Indoor Main Board Instructions...................................................................................................................................................58

Troubleshooting from Indoor Unit...............................................................................................................................................64

Troubleshooting from Remote Controller....................................................................................................................................75

APPENDIX......................................................................................................................................................................................79

INDOOR UNITS

General Information

INDOOR UNIT MODEL NUMBER NOMENCLATURE

Fig. 1 —Model Nomenclature (Indoor Units)

Table 1 —Indoor Unit Capacity

INDOOR UNIT CAPACITY 5 7 9 12 15 18 24 30 36 48 54 72 96

4-Way Cassette 40VMF • • • • • • • •

Compact 4-Way Cassette 40VMC • • • • •

1-Way Cassette 40VMI • • • • • • •

High Wall 40VMW • • • • • • • •

Low Static Duct 40VML • • • • • •

Medium Static Duct 40VMM • • • • • • • • •

High Static Duct 40VMH • • • • • • •

Vertical AHU 40VMV • • • • • • •

Underceiling/Floor 40VMU • • • • • • •

Floor Console Recessed 40VMR • • • • • •

Outside Air 40VMA • • • • •

40 VM F 007 A - - 3

Digit # 1,2: Product Series

40 - Indoor Fan Coil Unit

Digit # 3,4: Model Letters

VM - Carrier VRF

Digit # 12: Electrical

3 - 208/230-1-60

Digit # 5: Model Number Modifier

A - Outside Air

C - Compact 4-Way Cassette Digit # 11: Not Defined

D - Multiport Distribution Controller - Blank

F - 4-Way Cassette

H - High Static Duct Digit # 10: Not Defined

L - Low Static Duct

- Blank

M - Medium Static Duct

Digit # 9: Not Defined

R - Floor Console Recessed

A - Design Revision

U - Underceiling / Floor

V - Vertical AHU

W - High Wall

Digit # 6,7,8: Cooling Capacity (Btu/h)

009 - 9,000 012 - 12,000

015 - 15,000 018 - 18,000

024 - 24,000 030 - 30,000

036 - 36,000 048 - 48,000

I - 1-Way Cassette

005 - 5,000 007 - 7,000

054 - 54,000 072 - 72,000

096 - 96,000

INDOOR UNITS LINEUP

Figure 2 - 4-Way Cassette

(40VMF)

Figure 3 - Compact 4-Way

Cassette (40VMC)

Figure 4 - High Static Duct

(40VMH)

Figure 5 - High Wall

(40VMW)

Figure 6 - Low Static Duct

(40VML)

Figure 7 - Medium Static Duct

(40VMM)

Figure 8 - Underceiling / Floor

(40VMU)

Figure 9 - Floor Console

Recessed (40VMR)

Figure 10 - Vertical AHU

(40VMV)

Figure 11 - Outside Air

(40VMA)

Figure 12 - 1-Way Cassette

(40VMI)

Refrigerant Circuit

Fig. 13 — Refrigerant Circuit Schematic Diagrams for Indoor Units (40VMA)

Fig. 14 —Refrigerant Circuit Schematic Diagrams for Indoor Units (40VMC, F, H, I, L, M, R, U, V, W)

Table 2 —Refrigerant Circuit Component Function

NO. NAME SYMBOL FUNCTION

1 Room or return air temperature sensor T1 (T0 for 40VMA) Used for thermostat control

2 Inlet pipe temperature sensor T2A Used to calculate subcooling (SC) when heating

3 Outlet pipe temperature sensor T2B Used to calculate superheated (SH) when cooling

4 Electronic expansion valve EEV Used to control SH in cooling and SC in heating

5 Room temperature sensor TA (Only for 40VMA) Used to stabilize outlet air temperature by controlling fan speed or EEV opening

6 Solenoid valve SVD (Only for 40VMA) Used to prevent refrigerant trapping in the heat exchanger

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Table 3 —List of Electronic Expansion Valve Types

● 500 Pulses

☐2000 Pulses

Operating Temperature Range

The 40VMA (outside air) functions are cooling, heating, and fan operation.

Other indoor units can operate in cooling, heating, auto, fan, and dry mode.

COOLING MODE —

Indoor unit (except 40VMA) thermal OFF is activated when the return air temperature is below 59°F WB.

HEATING MODE —

Indoor unit (except 40VMA) thermal OFF is activated when return air temperature is above 84°F DB.

Table 4 —40VMC, F, H, I, L, M, R, U, V, W

Table 5 —40VMA

CAPACITY INDEX 5 7 9 12 15 18 24 30 36 48 54 72 96

1-Way Cassette (40VMI) ●●●●●●●

4-Way Cassette (40VMF) ● ● ● ● ● ● ● ●

High Wall (40VMW) ☐☐☐☐☐☐☐☐

Medium Static Duct (40VMM) ☐☐☐☐☐ ●●●●

Low Static Duct (40VML) ☐☐☐☐☐☐

Vertical Air Handing Unit (40VMV) ● ● ● ● ● ● ●

High Static Duct (40VMH) ● ● ● ● ● ● ●

Outside air (40VMA) ● ● ● ● ●

Compact 4-Way Cassette (40VMC) ● ● ● ● ●

Underceiling/Floor (40VMU) ● ● ● ● ● ● ●

Floor Console Recessed (40VMR) ☐☐☐☐☐

Mode Inside Temperature

Cooling 50~75°FWB

Heating 54~86°FDB

Mode Inside Temperature

Cooling and

Fan 41~109°FWB

Heating 23~109°FDB

Function and Control

ELECTRONIC EXPANSION VALVE OPERATION — Electronic expansion valves of the indoor unit regulate the refrigerant

flow to control superheat during cooling operation and subcooling during heating operation.

Table 6 —List of 500P EEV Opening in Cooling Mode

Table 7 —List of 2000P EEV Opening in Cooling Mode

500P EEV Operation Driver

When the indoor unit receives the following signal:

• Signal to turn OFF

• Indoor unit error signal

• Indoor unit turns to fan mode

• Indoor unit turns to thermo-OFF

• Indoor unit shut down due to low temperature protection on the evaporator

The EEV’s control uses the following logic:

• If the outdoor unit shuts down without cooling capacity requirement:

The EEVs keep previous opening for three minutes.

Then EEVs conduct 300P opening (EEV whose opening is not equal to zero will close to 0P first, then open to 300P).

• If the cooling capacity requirement of the outdoor unit is not equal to 0, the EEVs keep the previous opening for 25 seconds

after the indoor unit turns off, then close to -16P to reset the opening and standby.

When the indoor unit receives the turn ON signal, the EEVs control uses the following logic:

CAPACITY INDEX INITIAL OPENING MINIMUM OPENING MAXIMUM OPENING

7~18 120 54 480

24 120 54 480

30 120 54 480

36 120 54 480

Larger than 48 120 54 480

CAPACITY INITIAL OPENING MINIMUM OPENING MAXIMUM OPENING

Less than 12 300 104 2000

15~18 200 104 2000

24 300 104 2000

30 400 104 2000

Larger than 36 400 104 2000

Fig. 15 —500P EEV Operation Driver

Initial EEV opening

Is Pe 14.5psi?

Keep the EEV

open for five minutes

YES

Pump down order

EEV Superheated

degree control

EEV open to 200P

for 3min

7~12K: EEV open to 350P,

15~30K: EEV open to 300P,

36~54K: EEV open to 250P.

Is DSH27F?

YES

Is Pe44psi?

YES

Is Startup time

30min ?

Pe 17psi,

or Tdsh 45,

or Pc 464psi

Is Pe22psi?

YES

EEV Superheated

degree control until initial

EEV opening three minutes

YES

EEV -16P until close

YES

EEV open to 200P for one

minute, if Pe 14.5psi, the

next time EEV opening

+80P until 480P

2000P EEV Operation Driver

When the indoor unit receives the following signal:

• Signal to turn OFF

• Indoor unit error signal

• Indoor unit turns to fan mode

• Indoor unit turns to thermo-OFF

• Indoor unit shut down due to low temperature protection of the evaporator

The EEV’s control uses the following logic:

• If the outdoor unit shuts down without cooling capacity requirement:

The EEVs keep previous opening for three minutes. Then EEVs conduct 1200P opening (EEVs whose opening is not equal to

zero will close to 0P first, and then open to 1200 P).

• If the cooling capacity requirement of the outdoor unit is not equal to 0, the EEVs keep the previous opening for 25 seconds

after the indoor unit turns off, and then close to -40P to reset the opening and open to 224P (Standby).

When the indoor unit receives the turn ON signal, the EEVs controls use the following logic:

Fig. 16 —2000P EEV Operation Driver

Initial EEV opening

Is Pe 14.5psi?

Keep the EEV

open for five minutes

YES

Pump down order

EEV Superheated

degree control

EEV open to

1000P for three minutes

Is DSH 27F?

YES

7~12K: EEV open to 1200P,

15~30K: EEV open to 1000P,

36~54K: EEV open to 800P.

Is Pe 44psi?

YES

Is startup time

30 minutes?

Pe 17psi,

or Tdsh 45,

or Pc 464psi

Pe 36psi?

YES

EEV Superheated

degree control until initial

EEV opening three minutes

YES

NO EEV -40P until close,

then open to 24P

YES

EEV open to 1000P for one

minute, if Pe 14.5psi, the

next time EEV opening

+400P until 2000P

SUPERHEAT CONTROL

This function is used to adjust the opening of the electronic expansion valve so that superheat (SH) will reach a targeted superheat

value (SHS).

The superheat is calculated by reading the temperature of the gas pipe thermistor (T2B) and the temperature of the liquid pipe

thermistor (T2A) of the indoor unit.

SH = T2B - T2A SH: Evaporator outlet superheat (°F)

SHS: Target SH value T2B: Indoor unit gas pipe temperature (°F)

T2A: Indoor unit liquid pipe temperature (°F)

DSH: Discharge superheat of outdoor unit

40VMC, F, H, I, L, M, R, U, V, W Series

Initial SHS = 9°F for the first ten minutes after outdoor unit starts. SHS corrections are made according to the following logic:

Table 8 —SHS Correction by DSH of Outdoor Unit

HEATING OPERATION

Startup and Stop Control of 5000P EEV

When the indoor unit receives any of the following signal:

• signal to turn off

• indoor unit error signal

• indoor unit turns to thermo-off

The EEV’s control uses the following logic:

• If the outdoor unit shuts down without heating capacity requirement:

The EEVs keep the previous opening for three minutes.

Then EEVs conduct 300P opening (EEV whose opening is not equal to 0 will close to 0P first, then open to 300P).

• If the heating capacity requirement of the outdoor unit is not equal to 0:

The EEVs keep previous opening for 25 seconds after the indoor unit turns off, and then close to -16P to reset the opening and

open to 72P (Standby).

When the indoor unit receives the signal to turn ON, the EEV’s control uses the following logic:

Fig. 17 —For Heat Pump and Single Phase-VRF

SHS

Correction

Heat Pump VRF, Single-Phase VRF Heat Recovery

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All the

indoor units

open to OP

Compressor starts > 200s

Pc > 362 psi

Pc-Pe > 123 psi

T2a > 89.6°F

Heat Pump VRF

Single Phase VRF

Capacity

requirement = 0

Capacity

requirement = 0

Startup Signal

72P standby opening

First open to max. opening

for one minute, and then

open to initial opening for

4 minutes

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