Microtech® Iii Smartsource Unit Controller - Daikin VHF Installation And Maintenance Manual

MicroTech® III SmartSource Unit Controller
The MicroTech III SmartSource unit controller allows thermo-
stat, Daikin sensor and DDC standalone operation. The R
(24VAC) terminal is used to operate thermostat inputs G, Y1,
Y2, W1, W2, W3, W4 and TB1-1. The C (0VAC) terminal is
used to control inputs U, E and O. No external power sources
may be used to operate the MicroTech III controller. All units
must be properly grounded per local code requirements.
NOTICE
For information on sequence of operation and troubleshoot-
ing refer to OM 1149-xx.
Remote Reset of Automatic Lockouts
The Remote Reset feature provides the means to remotely
reset automatic lockouts. There are (3) means to reset an auto-
matic lockout condition:
•
Using the thermostat create 2 demands for capacity within
30 seconds
•
Press the Room Sensor or Thermostat Timed Override/
Reset Button for more than 10 seconds
•
Turn the unit power off
When the cause of the fault condition has been cleared, and
the unit transitions from not requiring any capacity to needing
any capacity twice within 30 seconds (accomplished by user
manipulation of the Heat/Cool/Auto/Off switch on the thermo-
stat), an alarm reset equivalent to a tenant override button re-
set is generated. The intelligent reset counter and the 24 hour
timer are cleared when this type of alarm reset is generated.
Note: This feature only applies to thermostat controlled
systems.
For room sensor controlled units, pressing the "Override" or
"Reset" button for more than 10 seconds will apply a ground
signal to the tenant override in(screw terminal connection at
TB1 pin 4) will clear the lockout alarm once the cause of the
fault condition has been cleared.
A unit power cycle can also be used to clear an automatic lock-
out if the conditions causing the fault have been cleared.
IM 986-11 • Vertical Stack WSHP
Table 16: MicroTech III SmartSource unit controller fault &
status LED's
Description
I/O Expansion Communication Fail
Invalid Configuration
Low Voltage Brownout
Emergency Shutdown
Compressor High Pressure
Compressor Low Pressure
Compressor Suction Temp Sensor
Fail
Compressor Low Suction Temp
Freeze Fault Detect
Room Temp Sensor Fail (Room
Sensor Control Only)
Leaving Water Temp Sensor Fail
Condensate Overflow
Serial EEPROM Corrupted
Waterside Economizer Low Temp
Cutout (WSE Control & Call for
Cooling)
Service Test Mode Enabled
Unoccupied Mode
Occupied, Bypass, Standby, or
Tenant Override Modes
Note: Mode/faults are listed in order of priority.
Table 17: I/O expansion module fault & status LED's
Description
Baseboard Communication Fail
Entering Water Temp Sensor
Fail
(Boilerless Electric Heat or
Waterside Economizer Only or
Hydronic Heat)
Low Entering Water
Temperature
(No Display On Boilerless
Electric Heat)
Fan is OFF
Fan Running at Low Speed (0
to 33%) Duty Cycle
Fan Running at Medium Speed
(34 to 66%) Duty Cycle
Fan Running at High Speed (67
to 100%) Duty Cycle
41
C
ontrols
Type Yellow Green
Fault ON Flash
Fault Flash Flash
Fault OFF Flash
Mode OFF Flash
Fault OFF OFF
Fault OFF OFF
Fault Flash Flash
Fault Flash OFF
Fault Flash OFF
Fault Flash Flash
Fault Flash Flash
Fault ON OFF
Fault ON ON
Mode Flash ON
Mode Flash Flash
Mode ON ON
Mode OFF ON
Type Yellow Green
Fault Flash OFF Flash
Fault ON OFF Flash
Fault OFF ON Flash
Mode OFF ON
Mode OFF Flash
Mode ON Flash
Mode Flash Flash
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Red
Flash
OFF
OFF
OFF
Flash
ON
ON
OFF
Flash
ON
ON
OFF
ON
Flash
Flash
OFF
OFF
Red
OFF
OFF
OFF
OFF