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5407934-UIM-C-1119
TABLE 22: 2-Stage AC-HP (Continued)
Fault (Displayed Text) Description
OUTDOOR: FFUEL CON-
FIG ERROR
OUTDOOR: AC NOW HP
OUTDOOR: HP NOW AC
OUTDOOR: HP NOW AC-
HRD LO
OUTDOOR: NO TON-
NAGE SET
OUTDOOR: COOLING
LTCO
OUTDOOR: HPS OPEN
OUTDOOR: PIPE FRZE
TIMER EXP
OUTDOOR: LOW VOLT-
AGE< 19V
OUTDOOR: O INPUT-AC
MODE
OUTDOOR: W INPUT-AC
MODE
OUTDOOR: W & O
INPUTS-AC
OUTDOOR: W & O
INPUTS-HP
Johnson Controls Ducted Systems
Fossil fuel mode setting error. The
FFUEL jumper is in the OFF position
with the bonnet sensor present.
System previously configured as AC,
now HP
System previously configured as HP,
now AC
System previously configured as HP,
now AC
Jumpers at 000 with no program loaded
and no tonnage selected
Cooling LTCO active
High-pressure switch fault (not in lock-
out yet)
Pipe freeze timer expiration
Low voltage (below 19.2 VAC) prevent-
ing further relay outputs
O signal received in AC mode
W signal received in AC mode
W and O signals received in AC mode
W and O signals received in HP mode
Category
Critical
Critical
Critical
Critical
Critical
Critical
Efficiency
Efficiency
Warning
Warning
Warning
Warning
Warning
61
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