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11.3. Safety device
11.3.1. Outdoor unit
1MPa = 10.2kgf/cm
2
Outdoor unit
Heat pump
model
50Hz CU-YL24HBE5 CU-YL28HBE5 CU-YL34HBE5 CU-YL43HBE5
For refrigerant cycle
High pressure OFF
MPa
4.15 4.15 4.15 4.15
switch ON
MPa
3.3 3.3 3.3 3.3
For compressor over current
protection for cooling mode
CT1 frequency down OFF A 10 12 18 20
RESET A 8 10 16 16.5
CT2 compressor stop OFF A 14.6 16 22 25
For compressor over current
protection for heating mode
CT1 frequency down OFF A 12.5 13.5 21.8 25
RESET A 8 10 16 16.5
CT2 compressor stop OFF A 16.5 17.5 25.8 29
Discharge temp protection
Discharge temperature Compressor °C
Td 110°C → Comp OFF
thermistor (Td) OFF
Td 110°C x 3 times within 1 hour → display error code
Liquid compress protection
Crankcase heater - W 33 33 33 33
For fan motor protection
Internal OFF °C 135 135 100 135
protector (49F) ON °C87878087
For condensation temperature
protection control OFF °C58585858
Heat exchanger RESET °C54545454
thermistor (Th)
For control protection
Fuse CUT A 2.5 2.5 6.3 6.3
Main Fuse
CUT A 30 30 — —
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