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Heat Pump Troubleshooting
Table 11. Interface panel diagnostic code key (continued)
ALARM
Secondary 2 communication lost
Secondary 3 communication lost
Secondary 4 communication lost
Secondary 5 communication lost
Secondary 6 communication lost
Secondary 7 communication lost
Secondary 8 communication lost
Secondary 9 communication lost
Primary communication lost
BMS offline
System Chilled LWT too high
System Hot LWT too low
Condenser LWT too low
Evaporator LWT too high
Error in the number of retain memory writings
Error in retain memory writings
Wrong Primary rotation control parameters
Wrong temperature control parameters
Wrong local rotation control parameters
Circuit 1 Differential Pressure low
Circuit 2 Differential Pressure low
Incomplete Defrost Cycle
Incomplete Defrost Cycle Lockout
Defrost Ambient Temperature high
Compressor Diagnostic Codes
Compressors used in Trane air-to water heat pumps use
solid state protection and have PTC (Positive Temperature
Coefficient) internal sensors with an avalanching
resistance in the event of high temperatures. The sensors
are calibrated for proper motor protection.
56
RESET
Auto
Warning
Auto
Warning
Auto
Warning
Auto
Warning
Auto
Warning
Auto
Warning
Auto
Warning
Auto
Warning
Auto
Secondary Modules switch into Stand-alone Mode
Auto
Warning
Auto
Warning
Auto
Warning
Auto
Warning
Auto
Warning
User
Warning
User
Warning
Auto
Warning
Auto
Warning
Auto
Warning
Auto
Warning
Auto
Warning
Auto
Warning
User
Locks out module
Auto
Warning
KRIWAN Flash Codes
The KRIWAN flash code allows for a quick and easy status
display and troubleshooting.
The error code consists of a red and orange pulse
frequency. They are continually displayed after each other.
There is a 1.5 second pause before the red pulse
sequence. There is a 0.8 second pause between the red
and orange pulse sequences. The error code can be
determined from the number of pulsing flashes.
ACTION
ARTC-SVX006A-EN
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