Trane Thermafit AMC Series Installation, Operation And Maintenance Manual page 82

Modular air-cooled chiller

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Table Of Contents

Table of Contents

Optional Variable Frequency Drive

Table 18. Warning and alarm definitions and troubleshooting (continued)

Warning/Alarm

Description / Probable Cause

WARNING 62,

The output frequency has reached the value

Output frequency at

set in 4-19 Max Output Frequency.

maximum limit

WARNING/ALARM

The cut-out temperature of the control card is

65, Control card over

80 °C.

temperature

The frequency converter is too cold to

WARNING 66,

operate. This warning is based on the

Heatsink temperature

temperature sensor in the IGBT module.

low

ALARM 67, Option

One or more options have either been added

module configuration

or removed since the last power-down.

has changed

ALARM 69, Power

The temperature sensor on the power card is

card temperature

either too hot or too cold

ALARM 70, Illegal FC

The control card and power card are

configuration

incompatible.

ALARM 78, Tracking

Parameter settings are initialized to default

error Drive initialized

settings after a manual reset.

to default value

A no-flow condition has been detected in the

ALARM 92, No flow

system. 22-23 No-Flow Function is set for

alarm.

A no-flow condition in the system with the

ALARM 93, Dry

frequency converter operating at high speed

pump

may indicate a dry pump. AP-26 Dry Pump

Function is set for alarm.

Feedback is lower than the set point. This

ALARM 94, End of

may indicate leakage in the system. 22-50

curve

End of Curve Function is set for alarm.

Torque is below the torque level set for no

ALARM 95, Broken

load, indicating a broken belt. 22-60 Broken

belt

Belt Function is set for alarm.

Motor start has been delayed due to short-

ALARM 96, Start

cycle protection. 22-76 Interval between

delayed

Starts is enabled.

Stopping the motor has been delayed due to

WARNING 97, Stop

short cycle protection. 22-76 Interval between

delayed

Starts is enabled.

WARNING 98, Clock

Time is not set or the RTC clock has failed.

fault

This warning indicates the frequency

WARNING 200, Fire

converter is operating in fire mode. The

mode

warning clears when fire mode is removed.

WARNING 201, Fire

This indicates the frequency converter had

mode was active

entered fire mode.

While operating in fire mode one or more

WARNING 202, Fire

alarm conditions have been ignored which

mode limits

would normally trip the unit. Operating in this

exceeded

condition voids unit warranty.

A–8

Troubleshooting

Check the application to determine the cause. Possibly increase the output frequency

limit. Be sure the system can operate safely at a higher output frequency. The warning

will clear when the output drops below the maximum limit.

•

Check that the ambient operating temperature is within limits.

•

Check for clogged filters.

•

Check fan operation.

•

Check the control card.

Increase the ambient temperature of the unit. Also, a trickle amount of current can be

supplied to the frequency converter whenever the motor is stopped by setting 2-00 DC

Hold/Preheat Current at 5% and 1-80 Function at Stop

Check that the configuration change is intentional and reset the unit.

•

Check that the ambient operating temperature is within limits.

•

Check for clogged filters.

•

Check fan operation.

•

Check the power card.

Contact your supplier with the type code of the unit from the nameplate and the part

numbers of the cards to check compatibility.

Reset the unit to clear the alarm.