Resetting Cooling And Heating; Lockouts; Method 1; Method 2 - Trane Foundation EBC180 Installation, Operation And Maintenance Manual

T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g
Table 20. FDD troubleshooting
TESTS
Damper Stuck Open
Damper Stuck at
Minimum
Bad or Unplugged
Actuator
Sensor Hard Failure
Actuator Mechanically
Disconnected

Resetting Cooling and Heating

Lockouts

Cooling Failures and Heating Lockouts are reset in an
identical manner.
Method 1 section explains resetting the system from
the space; Method 2 section explains resetting the
system at the unit.
N N o o t t e e : : Before resetting Cooling Failures and Heating
Lockouts check the Failure Status Diagnostics by
the methods previously explained. Diagnostics
will be lost when the power to the unit is
disconnected.

Method 1

To reset the system from the space, turn the "Mode"
selection switch at the thermostat to the "Off" position.
After approximately 30 seconds, turn the "Mode"
selection switch to the desired mode, i.e. Heat, Cool or
Auto.

Method 2

To reset the system at the unit, cycle the unit power by
turning the disconnect switch "Off" and then "On".

Condensate Overflow Switch

When the condensate overflow switch is closed, a drain
pan overflow condition is indicated and it will shut unit
operations down.
42
Air temp. sensor
Not economizing
failure / fault
when it should
x
FAULTS
Economizing when
it should not
x
x
x x
x x
x x

Unit Economizer Control (ECA)

Verify Economizer Status by Economizer Actuator
(ECA) LED indicator:
• OFF: No Power or Failure
• ON: Normal, OK to Economize
• Slow Flash: Normal, Not OK to Economize
• Fast Flash - 1/4 Second On / 2 Seconds Off:
– Error Code: Communications Failure
• Pulse Flash: 1/30 Second On / 1/4 Second Off: (2
Seconds between pulse sequences)

Error Code

• 1 Flash: Actuator Fault
• 2 Flashes: CO
• 3 Flashes: RA Humidity Sensor
• 4 Flashes: RA Temp Sensor
• 6 Flashes: OA Humidity Sensor
• 7 Flashes: OA Temp Sensor
• 8 Flashes: MA Temp Sensor
• 9 Flashes: On-board Setpoint Failure
Damper not
Excess
modulating
outdoor air
x
x
x
x
Sensor
2
x
x
x
RT-SVX50J-EN