User's Manual

Appendix D - ADM Error Codes
3A2175A 81
T8A7
No Cooling
Red Chiller
No temperature decline
Alarm Tripped circuit breaker Visually check circuit breaker for a tripped condition
T8B8
No Cooling
Blue Chiller
Alarm
Defective cooling valve
Disconnect the valve and measure the voltage across
the wires when the chiller is running to ensure 24V is
being delivered to the valve. If so, the cooling valve
will likely need replacing.
Chilled water supply off Turn on chilled water supply
Loose or bad connection Check RTD wiring
T9A6
Red Blanket
Temp. Cutoff
Heater overtemperature cutoff
Alarm
Defective RTD Replace RTD
T9B5
Blue Blanket
Temp. Cutoff
Alarm
T9A3
Red Inline
Temp. Cutoff
Alarm
Defective High Power
Temperature Control
Module
Replace High Power Temperature Control Module
T9B1
Blue Inline
Temp. Cutoff
Alarm Loose connections Tighten connections
T9C6
Red Blanket
Ctrl
Shutdown
PCB over temperature
Alarm
Overheated
Temperature Control
Module
Turn conditioning zone off. Wait a few minutes. If the
condition does not clear or regenerates consistently,
replace heater module
T9C5
Blue Blanket
Ctrl
Shutdown
Alarm
T9C3
Red Inline
Ctrl
Shutdown
Alarm
T9C1
Blue Inline
Ctrl
Shutdown
Alarm
T9C2
Red Hose Ctrl
Shutdown
Alarm
T9C4
Blue Hose
Ctrl
Shutdown
Alarm
T9C7
Red Chiller
Ctrl
Shutdown
Alarm
T9C8
Blue Chiller
Ctrl
Shutdown
Alarm
V1H1
Motor Control
Undervoltage
The voltage to the MCM has
dropped to a level where
performance is greatly affected
Alarm
Tripped circuit breaker Visually check circuit breaker for a tripped condition
Supply lines providing
low voltage
Check incoming voltage to ensure it is above the
minimum operating voltage
V4A6
Red Blanket
Overvoltage
High line voltage
Alarm
Incoming line voltage is
too high
Measure voltage across disconnect switch. Voltage
should measure between 190 and 264 Vac.
V4B5
Blue Blanket
Overvoltage
Alarm
V4A3
Red Inline
Overvoltage
Alarm
V4B1
Blue Inline
Overvoltage
Alarm
V4A2
Red Hose
Overvoltage
Alarm
V4B4
Blue Hose
Overvoltage
Alarm
V4A7
Red Chiller
Overvoltage
Alarm
V4B8
Blue Chiller
Overvoltage
Alarm
Error
Code Error Name Error Description
Error
Type Cause Solution