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Daikin MicroTech MT2300 - User Manual
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LEARN MO
RE A
T
DAIKINAP
PLIE
D
.C
OM
OCT
O
B
E
R 2024
R
R
H7
H7
H8
H8
H1
H1
LED
LED
FM
FM
SP
SP
RM
RM
GND
GND
LED
LED
FM
FM
SP
SP
RM
RM
GND
GND
TB3
TB3
TB2
TB2
TB1
TB1
E
E
E
E
U
U
U
U
W2
W2
W1
W1
Y2
Y2
Y1
Y1
G
G
C
C
R
R
W2
W2
W1
W1
Y2
Y2
Y1
Y1
G
G
C
C
MT2300
MT2300
PART# 910384405
PART# 910384405
H3
H3
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
H4
H4
RY/FAN_HIGH
RY/FAN_HIGH
RY/FAN_EN
RY/FAN_EN
RY/PUMP
RY/PUMP
TB1
TB1
H5
H5
H6
H6
H4
H4
PWM
PWM
WSE
WSE
GND
GND
HGR
HGR
GND
GND
AUX1
AUX1
GND
GND
AUX2
AUX2
GND
GND
RV2
RV2
GND
GND
COMP2
COMP2
GND
GND
MI
CR
O
TECH
®
C
O
NTR
O
LLE
R
MT2300 UNIT C
O
NTRO
LLE
R WITH MT2310 I/O EXP
ANSIO
N BO
ARD
O
M
1
36
4-
1
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PE
RA
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N MANUAL
•
R-32 R
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FR
IG
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RANT W
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T PUMPS
©2024 DAIKIN APP
LIED | (800) 432.1342
2
Table of Contents
Main Page
Table of Contents
2
Safety Information
3
Hazard Identification
3
Safety Considerations
3
Introduction
3
Connections and Terminals
4
MT2300 Unit Controller & MT2310 I/O Board
4
Connections
4
Unit Controller and Control Modules
5
I/O Descriptions
5
Replacing Unit Controller
6
Configuration DIP Switches
6
Functionality
8
Operating Modes
8
Safety Inputs (HPS, LPS, SLTS, COS)
8
Control Outputs
9
LED Indicators
9
Operation
10
Start-Up
10
Fan Speed Selection
10
Bacnet Communication Module
10
Sequence of Operation
10
Electric Heat Controls
13
Unit Status
13
Remote Shutdown
13
Thermostat Inputs
14
Optional Features
15
Heating Source Selection
15
Hydronic Heat
15
Two Compressor Option
15
Dehumidification
15
Dehumidification Only
16
Waterside Economizer
17
Fault Modes
18
Brownout
18
High / Low Pressure Faults (HP/LP)
18
Low Suction Temperature Fault Heating
18
Low Suction Temperature Fault Cooling
19
Dehumidification
19
Condensate Overflow
19
Fan Operation During most Modes, Faults and Shutdowns
19
Status LED Indication
20
Faults and Modes
20
Troubleshooting
22
MT2300 Unit Controller LED Faults
22
A2L Leak Detection Sensor and Board Service
25
A2L Detection and Mitigation
25
A2L Leak Detection System
25
A2L Leak Mitigation
25
A2L Leak Detection Sensor and Board Troubleshooting and Diagnostics
25
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Daikin MicroTech MT2300 Specifications
General
Brand
Daikin
Model
MicroTech MT2300
Category
Controller
Language
English
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