Howevecitisimportanttonotethattheusercanleavea
ServiceTest]nodetoviewanyofthelocaldisplaymodesand
thecontrolwillremaininthe Service Test ]node.
Independent Outputs -- The INDP sub-mode items
can be turned on and off regardless of the other category states.
For example, the alarm relay can be forced on in the INDP
sub-mode and will remain on if compressor relays are request-
ed in the COOL sub-mode.
Fans in Service Test Mode -- Upon entering the
FANS sub-mode, the user will be able to turn the supply fan on
and off, set the supply fan VFD speed, and turn the condenser
fans on and off.
Cooling in Service Test Mode -- The COOL sub-
]node offers different cooling service tests.
The user has manual relay control of individual compres-
sors. If the user energizes mechanical cooling, the supply fan
and the outdoor fans will be started automatically. During
mechanical cooling, the unit will protect itself. Compressor
diagnostics are active, monitoring for high discharge pressure,
low suction pressure, etc. The user can also turn the hot gas
bypass valve on and off.
NOTE: It is crucial that proper compressor rotation be verified
during the service test. Each compressor must be tested
individually. After starting each compressor, the control will
check the suction pressure after 5 seconds of run time. If the
control does not see a sufficient decrease in suction pressure
after 5 seconds, mechanical cooling will be shut down, and an
alarm will be generated (A140). This alarm requires a manual
reset. If this alarm occurs, do not attempt a restart of the
compressor and do not attempt to start any other compressors
until the wiring to the unit has been corrected.
Heating in Service Test Mode _ If unit has a ther-
mostat connected (C TYP = 3 or 4), install the RED jumper
wires between TB4, terminals R (1), W2 (3) and Wl (4). Ter-
minal block TB4 is located in the unit control box. Remember
to disconnect these jumpers when Test Mode is completed. The
Heat Test Mode sub-mode will offer automatic fan start-up if
the unit is not a gas heat unit. On gas heat units, the IGC feed-
back from the gas control units will bring the fan on as
required.
Within this sub-mode, the user has control of heat relays 1
to 6. The user can also turn on the requested heat stage.
NOTE: When service test has been completed, if unit has a
thermostat connected (CTYP = 3 or 4), remove the RED
jumper wires at TB4, terminals R (1), W2 (3) and Wl (4).
Terminal block TB4 is located in the unit control box. Store
these jumpers in the unit control box for future use.
ITEM
TEST
STOP
S.STP
FAN.F
F.4.CH
INDP
ECN. C
E.PWR
E.CAL
PE.A
PE.B
PE.C
H.I.R
ALRM
FANS
S.FAN
S. VFD
CD.F.A
CD.F.B
COOL
A1
A2
MLV
B1
B2
HEAT
HT.ST
HT.1
HT.2
HT.3
HT.4
HT.5
HT.6
Table 41 -- Service Test
EXPANSION
Service Test Mode
Local Machine Disable
Soft Stop Request
Supply Fan Request
4 in. Filter Change Mode
TEST INDEPENDENT OUTPUTS
Economizer Act.Cmd.Pos.
Economizer Power Test
Calibrate the Economizer?
Power Exhaust Relay A
Power Exhaust Relay B
Power Exhaust Relay C
Heat Interlock Relay
Remote Alarm/Aux Relay
TEST FANS
Supply Fan Relay
Supply Fan VFD Speed
Condenser Fan Circuit A
Condenser Fan Circuit B
TEST COOLING
Compressor A1 Relay
Compressor A2 Relay
Min. Load Valve (HGBP)
Compressor B1 Relay
Compressor B2 Relay
TEST HEATING
Requested Heat Stage
Heat Relay 1
Heat Relay 2
Relay 3 W1 Gas Valve 2
Relay 4 W2 Gas Valve 2
Relay 5 W1 Gas Valve 3
Relay 6 W2 Gas Valve 3
RANGE UNITS POINT WRITE STATUS
ON/OFF MAN CTRL
YES/NO UNIT-STOP config
YES/NO SOFTSTOP forcible
YES/NO SFANFORC forcible
YES/NO FILT4CHG
ON/OFF
ON/OFF
ON/OFF
0-100
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
O-MAX
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
ON/OFF
%
ECONCTST
ECONPTST
ECON CAL
PE A TST
PE-BTST
PE C TST
HIR TST
ALR-MTST
I SFAN TST
SGVF-DTST
CNDA TST
CNDB TST
I CMPA1TST
CMPA2TST
MLV TST
CMP-B1TST
CMPB2TST
HTST TST
HSl TST
HS2 TST
HS3TST
HS4 TST
HS5 TST
HS6TST
3O
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