62
operation, this will be the MSAS (supply-air set point + reset)
for cooling and the heating set point for heating.
Press
to display the control temperature. This display is
the actual supply-air temperature leaving the unit.
(Temperature) — The system temperature subfunc-
tion displays the readings at the temperature sensing ther-
mistors. To read a temperature, press
, then scroll to the
desired temperature reading by pressing
.
(Pressure) — The system pressure subfunction dis-
plays suction, discharge, low-pressure switch status, building
pressure, and static pressure.
(Inputs) — This subfunction displays the rest of the
system inputs. Press
, then press
. The compres-
sor A1 status is displayed with either ON or OFF based on
whether the compressor is running or not. Press
to access
additional system inputs. Some inputs can be used forced by
entering a value to replace the actual value. For example, press
until the ENT display appears. The display will show ENT
LOW or ENT HGH, indicating that the enthalpy is good
(LOW) or bad (HGH).
Table 54 — Status Directory
See legend and notes on page 67.
STATUS
Subfunction
Keypad Entry
Display
Expansion (Press
key)
1 ALARMS
ALARMS
CURRENT ALARMS
ALARM 51
COMPRESSOR A1 FAULT
ALARM 52
COMPRESOR A2 FAULT (Sizes 088, 104 Only)
ALARM 53
COMPRESSOR A1 STATUS
ALARM 55
COMPRESSOR B1 FAULT
ALARM 56
COMPRESSOR B2 FAULT (Sizes 088,104 Only)
ALARM 57
COMPRESSOR B1 STATUS
ALARM 59
THERMISTOR FAILURE SUPPLY AIR
ALARM 60
THERMISTOR FAILURE RETURN AIR
ALARM 61
OUTSIDE AIR THERMISTOR FAILURE
ALARM 62
CIRCUIT A CONDENSER THERMISTOR FAILURE
ALARM 63
CIRCUIT B CONDENSER THERMISTOR FAILURE
ALARM 64
COMPRESSOR A1 THERMISTOR FAILURE
ALARM 65
COMPRESSOR B1 THERMISTOR FAILURE
ALARM 66
SPACE THERMISTOR FAILURE
ALARM 67
CIRCUIT A DISCHARGE TRANSDUCER FAILURE
ALARM 68
CIRCUIT B DISCHARGE TRANSDUCER FAILURE
ALARM 69
CIRCUIT A SUCTION TRANSDUCER FAILURE
ALARM 70
CIRCUIT B SUCTION TRANSDUCER FAILURE
ALARM 71
LOSS OF COMMUNICATION WITH DSIO1
ALARM 72
LOSS OF COMMUNICATION WITH DSIO2
ALARM 73
LOSS OF COMMUNICATION WITH OPTION BOARD 1 (PSIO2)
ALARM 74
LOW PRESSURE CIRCUIT A
ALARM 75
LOW PRESSURE CIRCUIT B
ALARM 76
HIGH PRESSURE CIRCUIT A
ALARM 77
HIGH PRESSURE CIRCUIT B
ALARM 78
SUPPLY FAN FAILURE
ALARM 80
LOW CIRCUIT A SATURATED SUCTION TEMP
ALARM 81
LOW CIRCUIT B SATURATED SUCTION TEMP
ALARM 82
HIGH CIRCUIT A SUCTION SUPERHEAT
ALARM 83
HIGH CIRCUIT B SUCTION SUPERHEAT