Trane IntelliPak SCWF 72 User Manual

104
SCXF-SVX01Q-EN
Category Diagnostic
Controls
Reaction
Off or close requests are issued as appropriate to the following functions;
• Compressor staging/chilled water cooling control
• Heat operation
• Supply fan control and proof of operation
• Exhaust fan control and proof of operation.
• Exhaust actuator control
• Outside air damper control
• On VAV units, VFD control
Reset
Required
(PMR) A manual reset is required after the emergency stop input recloses. The diagnostic can be reset by the HI.
Entering Condenser Water Temperature Sensor Fail
Activation
Conditions
Temperature < -50°F or temperature > 209°F, and unit configured for water-cooled condenser
Time to
React
10 sec < T < 20 sec
Diagnostic
Text
(Human
Interface
Display)
“ENT COND WATER TEMP SENSOR FAIL”
Actions to
be Initiated
A “Lockout All Ckts” request is issued to the “Compressor Staging Function”
Reset
An automatic reset occurs after the entering condenser water temperature input returns to within range continuously for 15
seconds.
Entering Water Temperature Sensor Fail
Data used
(module,
packet,
byte, bit)
WSM, 01,18,05
Activation
Conditions
Temperature < -50°F or temperature > 209°F, and unit configured with water cooled condenser and/or economizer
Time to
React
10 sec < T < 20 sec
Diagnostic
Text
(Human
Interface
Display)
“ENTERING WATER TEMP SENSOR FAIL”
Actions to
be Initiated
A “Disable Water Side Economizer” request is issued to “Water Side Economizer Temperature Enable Function”
Reset
An automatic reset occurs after the Entering Water Temp. input returns to within range continuously for 10 seconds.
Evaporator Temperature Sensor Failure—Circuit 1, 2, 3, or 4
Problem
The evaporator temperature sensor (ckt #1, 2, 3, or 4) is out of range.
Check
Sensor resistance should be between 830 ohms (200°F) and 345.7Kohms (-40°F). If so, check field/unit wiring between sensor
and MCM/SCM.
Reason for
Diagnostic
The unit is reading a signal that is out of range for the circuit #1 evaporator temperature sensor input (temp < -55°F or temp >
209°F).
Controls
Reaction
The coil frost protection function for the refrigeration circuit (#1, 2, 3, or 4) only is disabled.
Reset
Required
(PAR) An automatic reset occurs after the #1, 2, 3, or 4 evaporator temp input returns to its allowable range for 10 seconds.
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Trane IntelliPak SCWF 72 Specifications

General

Brand	Trane
Model	IntelliPak SCWF 72
Category	Air Conditioner
Language	English