Trane CVHG Information Manual

Diagnostics Menu
70 CVHE-CLD-1A
Evap Rfgt Temp Sensor MMR Stepper All Open or Short Check Sensor,
Wiring And
Connections
Evap Water Pressure Sensor IFW Chiller All Open or Short and the Evap Water Pressure
Sensor is setup as installed at the Clear
Language Display.
Check Sensor,
Wiring, and
Connections
Evaporator Water Flow Overdue MAR Chiller Estab.
Evap.
Water
Flow on
going
from
STOP to
AUTO.
Evaporator water flow was not proven within
4.25 minutes of the Evaporator pump relay being
energized.
Check Pump,
Valves, Flow
Switch
Extended Compressor Surge MMR Starter All
Running
Modes
An extended Surge condition was detected and
the Surge protection feature was Enabled at the
Clear Lang. Display. An extended Surge
condition is defined being in a “continuous”
surge condition for 15 + 10% minutes.
Check
Condenser
Water Temp.
Extended Power Loss
Note: This diagnostic and the
functions tied to it are handled
by the Check Clock diagnostic.
IFW Starter All The unit lost power for an extended period of
time. On CTV units if power is lost for an
extended period of time the oil pump is not run
on Power Up. If a power loss is determined to be
a Momentary Power Loss the Oil Pump is run on
the Power Up to Post Lube the bearings. The
deciding factor determining if a power loss is
Extended or Momentary is TBD.
Check Main
Power Supply &
Wiring
External Base Load Setpoint IFW-AR Chiller All a. Not “Enabled”: no diagnostics.
b. “Enabled“: Out-Of-Range Low or Hi, set
diagnostic, Terminate external base loading
function. This IFW diagnostic will automatically
reset if the input returns to the normal range.
Check Signal At
Input
External Chilled Water Setpoint IFW-AR Options All a. Not “Enabled”: no diagnostics.
b. “Enabled“: Out-Of-Range Low or Hi, set
diagnostic, default CWS to next level of priority
(e.g. Front Panel SetPoint). This IFW diagnostic
will automatically reset if the input returns to the
normal range.
Check Signal At
Input
External Current Limit Setpoint IFW-AR Options All a. Not “Enabled”: no diagnostics.
b. “Enabled“: Out-Of-Range Low or Hi, set
diagnostic, default CLS to next level of priority
(e.g. Front Panel SetPoint. This IFW diagnostic
will automatically reset if the input returns to the
normal range.
Check Signal At
Input
External Hot Water Setpoint IFW-AR Options All a. Not “Enabled”: no diagnostics.
b. “Enabled“: Out-Of-Range Low or Hi, set
diagnostic, default HWS to next level of priority
(e.g. Front Panel SetPoint). This IFW diagnostic
will automatically reset if the input returns to the
normal range.
Check Signal At
Input
External Vane Position Setpoint MMR Chiller All a. Not “Enabled”: no diagnostics.
b. “Enabled“: Out-Of-Range Low or Hi, set
diagnostic.
Check Signal at
Input
DIAGNOSTIC DESCRIPTION
Diag
Type
Module
that
Called
Diag.
Diag.
Active
Modes
CAUSE Help Message

Trane CVHG Specifications

General

Brand	Trane
Model	CVHG
Category	Chiller
Language	English