Heat Controller EKTH Air Conditioner User Manual


 
19
Diagnostic Codes
STATUS DISPLAY
ERROR
LIGHT
SUGGESTED ACTION
FP
Freeze Protection Engaged. The room temperature
measured by the wireless remote thermostat or indoor
ambient thermistor active sensor falls below 40°F.
YN
No Action required. This setting will disengage when
the room temperature rises above 43°F.
Fd
Front
Desk
switch is closed. All outputs are switched off.
YN
Open front desk switch to allow occupant unit
operation.
On
Control is configured to respond to a wired thermostat Y N
No action if a wired thermostat is being used.
Otherwise, see Configuration Settings.
Indoor Ambient Thermistor reads outside the range -20°F to
200°F & the wireless thermostat is not communicating to the
unit control or
Indoor Ambient Thermistor (IAT) without a wireless remote
thermostat reads outside the range -20°F to 200°F.
F2
Configuration Error N N Set C1 Configuration Code to 0 or L5.
F3
Indoor Ambient Thermistor reads outside the range -20°F to
200°F
Y N Replace black Indoor Ambient Thermistor.
F4
Indoor Coil Thermistor either above or below operating
tolerances.
N Y Replace Red Indoor Coil Thremistor .
F5
Configuration Error N Y Set C1 Configuration Code to 0 or L5.
F6
Indoor Discharge Thermistor either above or below operating
tolerances.
NY
Replace Yellow Indoor
Discharge Thermistor.
Fb
Configuration Error N Y Set C1 Configuration Code to 0 or L5.
br
Brown Out Protection engaged. Power was lost or voltage is
low.
N N Check for incoming power at correct voltage.
L6
Discharge Air Too Hot. N Y Clean Filter or Remove Air Blockage.
L8
Air Restriction in Heating. N Y Clean Filter or Evaporator Coil.
L9
Air Restriction in Cooling. N Y Clean Filter or Evaporator Coil.
LC
Outdoor Coil Thermistor temperature high. N Y
Clean Condensor Coils, Check Fan
fault code. Code will reset after cleaning.
C1
Clean Indoor Coil / Filter. N Y Check for Blocked Indoor Air.
C0
Clean Outdoor Coil. N Y Check for Blocked Outdoor Air.
CODE
M
O
D
E
S
A
I
R
F
L
O
W
W
A
R
N
I
N
G
S
Replace black Indoor Ambient Thermistor or
Wireless Remote Thermostat.
YY
F
A
I
L
U
R
E
S
F1