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PG2021 CHV2-VP-ECM-V2
LED Display and Error Description
Complete Function PCB – I Control Type
Fan speed setting
LED indication
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
Return air sensor failure
Green LED blinks 1 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 2 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 sensor 2
failure
Green LED blinks 3 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.
Water pump failure
Green LED blinks 4 times,
stops for 3s
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
Water temperature is
lower than 3 ºC.
Check the water temperature.
Indoor coil overheat
protection
Green LED blinks 6 times,
stops for 3s
Water temperature is
higher than 70 ºC.
Check the water temperature.
Filter Switch (S6 PCB)
Green LED blinks 7 times,
stops for 3s
Filter switch is opened.
1. Check if filter block or not.
2. Replace the new filter.
Electric Heater failure
Green LED blinks 8 times,
stops for 3s
Only for unit with EH.
1. Change fan speed to high.
EH safety switch is
opened.
2. Replace the damaged EH safety switch.
EC motor failure (CN4)
Green LED blinks 9 times,
stops 3s
No EC motor feedback
1. Check Modbus setting.
2. Check the EC motor.
EC motor failure (CN5)
Green LED blinks 10
times, stops 3s
No EC motor feedback
1. Check Modbus setting.
2. Check the EC motor.
Anti-frozen protection
Green LED blinks 12
times, stops for 3s
When unit is standby,
Tr<2ºC.
1. Turn on unit to keep Tr high than 5ºC.
Cooke Industries - Phone: +64 9 579 2185 Email: [email protected] Web: www.cookeindustries.co.nz