Diagnostic Codes - Amana PTAC Installation Instructions & Owner's Manual

CODE
Freeze Protection Engaged. The room temperature
FP measured by the wireless remote thermostat or indoor
M
ambient thermistor active sensor falls below 40°F.
O
D
Fd Front Desk switch is closed. All outputs are switched off.
E
S
Low Remote Battery Warning.
Fb
Indoor Ambient Thermistor reads outside the range -20°F
to 200°F & the wireless thermostat is not communicating
to the unit control or
F
F1
A
Indoor Ambient Thermistor (IAT) without a wireless remote
I
thermostat reads outside the range -20°F to 200°F.
L
Indoor Coil Thermistor either above or below operating
U
F4
tolerances.
R
E
F5 Wireless Thermostat failure.
S
Indoor Discharge Thermistor either above or below
F6
operating tolerances.
A
L6 Discharge Air Too Hot..
I
R
L8 Air Restriction in Heating.
F
L
L9 Air Restriction in Cooling.
O
W
LC Outdoor Coil Thermistor temperature high.
W
A
C1 Clean Indoor Coil / Filter.
R
N
I
N
Clean Outdoor Coil.
C0
G
S

Diagnostic Codes

STATUS
ERROR
DISPLAY
LIGHT
No Action required. This setting will disengage
Y N
when the room temperature rises above 43°F.
Open front desk switch to allow occupant unit
Y N
N Y
Replace black Indoor Ambient Thermistor or
Y Y
N Y
N Y
N Y
N Y
N Y
N Y
N Y
fault code. Code will reset after cleaning.
N Y
N Y
19
SUGGESTED ACTION
operation.
Replace Battery in Wireless Devices.
Wireless Remote Thermostat.
Replace Red Indoor Coil Thremistor .
Replace Wireless Thermostat.
Replace Yellow Indoor
Discharge Thermistor.
Clean Filter or Remove Air Blockage.
Clean Filter or Evaporator Coil.
Clean Filter or Evaporator Coil.
Clean Condensor Coils, Check Fan
Check for Blocked Indoor Air.
Check for Blocked Outdoor Air.