Trane CVHE Troubleshooting

CVHE-SB-32A 1
General Troubleshooting Index
Problem Description No. Page
AFD (adaptive frequency drive) diagnostics 1 9
Failure to accelerate or did not accelerate 2 9
Approach Temperature reads -40°°F. 3 9
Auto X-former Starter: Runs (3) seconds and trips. Unit will not transition. 4 9
IGV BPI not found or low 5 9
Bearing Temperatures 1 and 2 Locations. 6 10
Capacity Limited by High Current when the phase current as read from the
Compressor report reads zero amps. Getting this message during the run mode.
7 10
Current Overload 8 10
Chiller Loss of Communication with Circuit module and IGV overdriving close. 9 10
Check Clock (IFW) Informational Warning Diagnostics. On a loss of power the
clock does not keep time, if there is an extended power loss (greater than 15
seconds).
10 10
Chiller Loss of Communication with Purge and the IGV calibrates 11 11
Circuit Loss of Communication with Starter or Circuit Loss of Communication
with Chiller Diagnostics
12 11
Clear Language Display won’t go into Demo mode. 13 11
Communication diagnostic; none or degraded communications. 14 11
Loss of Communication with Starter Diagnostics at Startup with no Inlet
Guide Vane action. Mode is “Resetting” and can move through the menus.
15 11
Loss of Communication or Intermittent Communication between any of the
modules. (chiller, starter, tracer, circuit, Steeper, options, purge, etc.)
16 12
No Communication, on a power up, get message “No Communication, Data Not
Valid” and no action in the IGV.
17 13
No Communication, on a power up, get message “No Communication, Data Not
Valid” but the Inlet Guide Vane calibrates.
18 13
Starter Loss of Communication with Chiller. No other diagnostic. 19 13
TCI Loss of Communication with Chiller. 20 13
High compressor Discharge temperature
The compressor discharge temperature exceeded 200°F.
21 13
Cond. Pressure 2-10 VDC output will not work. 22 14
Condenser Pressure Delta-pressure output does not show up. 23 14
Cond. Refrig. Temp. Sensor diagnostic, when the displayed Cond. Refrig. Temp. is
reading fine.
24 14
Condenser and Evaporator entering and leaving water temps. changing rapidly
and reading incorrectly, i.e. -25° F to 900°F.
25 14
Condenser Water Flow lost diagnostic. Unit will not restart until manually reset. 26 14
Capacity limited by current limit 27 14

Trane CVHE Specifications

General

Brand	Trane
Model	CVHE
Category	Chiller
Language	English