51
H33
Indoor /
outdoor
misconnection
abnormality
—
—
Indoor and outdoor
rated voltage
different
• Indoor and
outdoor units
check
H36
Outdoor gas
pipe
temperature
sensor
abnormality
Continuous
for 5s
Heating
protection
operation only
Outdoor gas pipe
temperature sensor
open or short circuit
• Outdoor gas pipe
temperature
sensor lead wire
and connector
H97
Outdoor fan
motor
mechanism
lock
2 times
happen within
30 minutes
—
Outdoor fan motor
lock or feedback
abnormal
• Outdoor fan
motor lead wire
and connector
• Fan motor lock or
block
H98
Indoor high
pressure
protection
—
—
Indoor high pressure
protection (Heating)
• Check indoor
heat exchanger
• Air filter dirty
• Air circulation
short circuit
H99
Indoor
operating unit
freeze
protection
—
—
Indoor freeze
protection (Cooling)
• Check indoor
heat exchanger
• Air filter dirty
• Air circulation
short circuit
F11
4-way valve
switching
abnormality
4 times
happen within
30 minutes
—
4-way valve
switching abnormal
• 4-way valve
• Lead wire and
connector.
F17
Indoor standby
units freezing
abnormality
3 times
happen within
40 minutes
—
Wrong wiring and
connecting pipe,
expansion valve
leakage, indoor heat
exchanger sensor
open circuit
• Check indoor/
outdoor
connection wire
and pipe
• Indoor heat
exchanger
sensor lead wire
and connector
• Expansion valve
lead wire and
connector.
F90
Power factor
correction
(PFC) circuit
protection
4 times
happen within
10 minutes
—
Power factor
correction circuit
abnormal
• Outdoor PCB
faulty
F91
Refrigeration
cycle
abnormality
2 times
happen within
20 minutes
—
Refrigeration cycle
abnormal
• Insufficient
refrigerant or
valve close
F93
Compressor
abnormal
revolution
4 times
happen within
20 minutes
—
Compressor
abnormal revolution
• Power transistor
module faulty or
compressor lock
F94
Compressor
discharge
pressure
overshoot
protection
4 times
happen within
30 minutes
—
Compressor
discharge pressure
overshoot
• Check
refrigeration
system
F95
Outdoor
cooling high
pressure
protection
4 times
happen within
20 minutes
—
Cooling high
pressure protection
• Check
refrigeration
system
• Outdoor air
circuit
LED 6 LED 5 LED 4 LED 3 LED 2 LED 1
Abnormality
judgement
Protection
operation
Problem
Check location
Diagnosis
display
Abnormality
or
protection
control
Summary of Contents for CS-MRE7MKE
Page 15: ...15 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control ...
Page 16: ...16 5 Dimensions 5 1 Indoor Unit ...
Page 17: ...17 5 2 Outdoor Unit ...
Page 18: ...18 6 Refrigeration Cycle Diagram ...
Page 19: ...19 7 Block Diagram ...
Page 20: ...20 8 Wiring Connection Diagram 8 1 Indoor Unit ...
Page 21: ...21 8 2 Outdoor Unit ...
Page 22: ...22 9 Electronic Circuit Diagram 9 1 Indoor Unit ...
Page 23: ...23 9 2 Outdoor Unit ...
Page 24: ...24 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board ...
Page 25: ...25 10 1 2 Power Printed Circuit Board 10 1 3 Indicator Printed Circuit Board ...
Page 26: ...26 10 2 Outdoor Unit ...
Page 79: ...79 18 1 3 To remove power electronic controller 18 1 4 To remove discharge grille ...
Page 80: ...80 18 1 5 To remove control board 18 1 6 To remove cross flow fan and indoor fan motor ...
Page 81: ...81 ...
Page 85: ...85 ...
Page 86: ...86 19 1 1 2 CS MRE9MKE ...
Page 87: ...87 ...
Page 88: ...88 19 1 2 Two Indoor Unit Operation 19 1 2 1 CS MRE7MKE x2 ...
Page 89: ...89 ...
Page 90: ...90 19 1 2 2 CS MRE9MKE CS MRE7MKE ...
Page 91: ...91 ...
Page 93: ...93 ...
Page 94: ...94 19 2 1 2 CS MRE9MKE ...
Page 95: ...95 ...
Page 96: ...96 19 2 1 3 CS MRE12MKE ...
Page 97: ...97 ...
Page 98: ...98 19 2 2 Two Indoor Unit Operation 19 2 2 1 CS MRE7MKE x2 ...
Page 99: ...99 ...
Page 100: ...100 19 2 2 2 CS MRE9MKE x2 ...
Page 101: ...101 ...
Page 102: ...102 19 2 2 3 CS MRE12MKE x2 ...
Page 103: ...103 ...