Section 4 – SR-2 Operation
Interface Board Test
Allows the technician to energize and de-energize individual control devices for diagnostic purposes. The unit is
not running to use this test. If the test is entered with the unit running, the unit will shut down.
IMPORTANT: Interface Board Test Mode is not allowed if any shutdown alarms exist or if the unit is in a Prevent
Mode shutdown null (Alarm Code 84). Clear all shutdown alarms before attempting to use Service Test Mode.
Choose Interface Board Test by pressing the SELECT key when INTERFACE BOARD TEST is shown in the
Maintenance Menu. The Interface Board Test screen appears as shown below. The test shown is the Heat
Output test.
OFF
ON
HEAT OUTPUT
EXIT LOCK ONTEMP ON
HEAD-P AMPS
SCT-P VOLTS
169
169
0.3
13.4
NEXT
Discharge Pressure, Suction Pressure and Amps and Volts are shown.
The TEMP ON key is used to momentarily energize the device.
The LOCK ON key energizes the device for 15 minutes. If the test times out Alarm Code 54 Test Mode Timeout
is set. Not all tests can be locked on. See the next page.
The EXIT key returns to the Maintenance Menu.
Not all tests are available on all units. Only tests used by the specific unit will appear.
See the list of tests on the next page.
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31 January 2005
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