ALARMS
MT2300 WSHP BACNET INTEGRATION
DAIKIN APPLIED
22
Table 11. BACnet Alarms by Priority, Continued
Alarm
Enumeration
Alarm Text
Description
Clear
Network
Reset
Details
3
20
EWT Snsr Flt
Entering Water Temperature
(EWT) Sensor Fault
Manual
Yes
The entering water temperature (EWT) sensor input
vaue exceeds the allowable temperature range .
Applies to boilerless electric heat and hydronic
heating/cooling unit configurations only.
21
Room Snsr Flt
Room Temperature Sensor Fault
Manual
Yes
The space temperature sensor input vaue exceeds
the allowable temperature range .
22
RAT Snsr Flt
Return Air Temperature (RAT)
Sensor Fault
Manual
Yes
The return air temperature sensor input vaue
exceeds the allowable temperature range . Applies
to units with control temperature enabled or with
hot gas reheat (HGR)
23
RH Snsr Flt
Space Relative Humidity (RH)
Sensor Fault
Manual
Yes
The relative humidity sensor input vaue exceeds
the allowable range .
24
EWT Low
Entering Water Temperature
(EWT) Low
Auto
No
Alarm indicates that the EWT is below the selected
water or glycol setpoint . Applies to units in heating
without boilerless electric heat .
25
Condensate Overflow
Condensate Overflow
Auto
Yes
Alarm indicates the detection of water in the
condensate overflow pan for 60 consecutive
seconds . Alarm disables cooling and
dehumidification operation until drain pan is dry.
26
WSE Low Temp Cutout
Waterside Economizer Low
Temperature Cutout
Auto
No
Alarm indicates a low EWT condition . Applies to
units that have a waterside economizer with an
active request for cooling .
1
The intelligent reset feature automatically clears an alarm the first two times it occurs within 24 hours. The third time the alarm occurs within this time, the alarm
requires a manual reset .
2
For WSHP applications where the refrigerant charge limits need to meet UL60335-2-40 standard requirements of Title 24, the MicroTech controller is supplied with
an additional A2L leak detection mitigation board and alarm support .
3
An Invalid Configuration alarm can occur for these reasons: 1. An application software mismatch between the baseboard and IO expansion module due to invalid
configuration switch 9 settings. 2. A hardware error due to the installation of an internal test application. 3. Series2 application only: The baseboard detects an
IO expansion module but its configuration switch 8 is incorrectly set to the OFF position. The following (4-7) apply to SS2C application only: 4. The baseboard
configuration switch 10 is incorrectly set to the ON position, indicating an invalid dual speed fan selection. 5. The baseboard configuration switches 7 and 8 are
incorrectly set to the ON position, indicating an invalid compressor selection . 6 . The IO expansion module is enabling HGR but the baseboard has no compressors
available on the 7 and 8 configuration switches. 7. No compressors are available, and no form of heating and cooling options are selected.