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SK2017 AHRI PFWSL-V/P-AECM-001
D.13.
LED Display and Error Description
LED receiver in ABS housing with 19-11/16” (SGS14HFCA-01010101) or 70-7/8” (SGS14HFCA-01010102) pre-wiring
Complete Function PCB – S Type Control
Fan speed setting
LED display
Condition
High speed
Red LED On
Normal
Medium speed
Yellow LED On
Normal
Low speed
Green LED On
Normal
For all units - Green LED
Error Description
Blink
Reason
Remedy
Electrical heater failure
Green LED blinks 1 times,
stops for 3s
Only for unit with EH.
EH safety switch is opened.
1.
Change fan speed to high.
2.
Replace the damaged EH
safety switch.
Indoor coil sensor 2 failure
Green LED blinks 2 times,
stops for 3s
Ti2 sensor unplugged or
damaged.
1.
Check if Ti2 plug is connected
or not.
2.
Check if sensor’s resistance is
correct or not.
Return air sensor failure
Green LED blinks 3 times,
stops for 3s
Room sensor unplugged or
damaged.
1.
Check if Tr plug is connected
or not.
2.
Check if sensor’s resistance is
correct or not.
Indoor coil sensor 1 failure
Green LED blinks 4 times,
stops for 3s
Ti1 sensor unplugged or
damaged.
1.
Check if Ti1 plug is connected
or not.
2.
Check if sensor’s resistance is
correct or not.
Indoor coil low temperature
protection
Green LED blinks 5 times,
stops for 3s
Water temperature is lower
than 37.4 ºF.
Check the water temperature.
Indoor coil over heat
protection
Green LED blinks 6 times,
stops for 3s
Water temperature is
higher than 158 ºF.
Check the water temperature
EC motor failure(CN4)
Green LED blinks 9 times,
stops 3s
No EC motor feedback
1.
Check DIPB-SW5 and SW6
setting.
2.
Check the EC motor.
EC motor failure(CN5)
Green LED blinks 10 times,
stops 3s
No EC motor feedback
1.
Check DIPB-SW5 and SW6
setting.
2.
Check the EC motor.
(All dimensions are approximate within 1/16 of an inch of those indicated)