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PG2021_SWC-V-ECM_02
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 - Green LED
Error Description
Blink
LED display
Reason
Remedy
Return air sensor
failure
Green LED blinks 1
times, stops for 3s
E1
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 2
times, stops for 3s
E2
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 sensor 2
failure
Green LED blinks 3
times, stops for 3s
E3
Ti2 sensor
unplugged or
damaged.
1. Check if Ti2 plug is connected or not.
2. Check if sensor’s resistance is correct
or not.
Water pump failure
Green LED blinks 4
times, stops for 3s
E4
Float switch is
opened.
1. Check if the condensate water pipe is
connected or not.
2. Check if the pump is functioning or
not.
Indoor coil low
temperature
protection
Green LED blinks 5
times, stops for 3s
E5
Water temperature
is lower than 3 ºC.
.
Check the water temperature.
Indoor coil overheat
protection
Green LED blinks 6
times, stops for 3s
E6
Water temperature
is higher than 70
ºC.
Check the water temperature
E7
1. Check if filter block or not
Cooke Industries - Phone: +64 9 579 2185 Email: [email protected] Web: www.cookeindustries.co.nz