Daitsu FMCD-04 - LED Display and Error Description

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SK2019 FMCD-V-ECM-001
LED Display and Error Description
Power / Operation LED light (both green)
Unit on
Power LED Off, Operation LED On
Unit in standby
Power LED On, Operation LED Off
For all units - Operation LED light (Green)
Error Description
Blink
LED Display
Reason
Remedy
Electrical heater failure
Green LED blinks 1
times, stops for 3s
E1
Only for unit with EH.
EH safety switch is open.
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
E2
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
E3
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
E4
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
E5
Water temperature is
lower than 3ºC.
Check the water temperature.
Indoor coil over heat
protection
Green LED blinks 6
times, stops for 3s
E6
Water temperature is
higher than 70ºC.
Check the water temperature
EC motor failure
Green LED blinks 9
times, stops for 3s
E9
No EC motor feedback
1. Check DIPB-SW5 and SW6 setting.
2. Check the EC motor.
Anti-frozen protection
Green LED blinks 11
times, stops for 3s
E11
When unit is standby,
Tr<2ºC.
1. Turn on unit to keep Tr higher than 5ºC