Panasonic CU-MVG153KE - Page 59

Diagnosis display Abnormality/Protection control Abnormality
Judgement
Temporary
operation
Primary location to verify
H23 Indoor heat exchanger temperature
sensor 1 abnormality
●
(Cooling only)
·
Heat exchanger temperature sensor
(defective or disconnected)
H24 Indoor heat exchanger temperature
sensor 2 abnormality
●
·
Indoor heat exchanger temperature
sensor 2
(defective or disconnected)
H27 Outdoor air temperature sensor
abnormality
●
·
Outdoor temperature sensor (defective or
disconnected)
H28 Outdoor heat exchanger
temperature sensor 1 abnormality
●
·
Outdoor heat exchanger temperature
sensor (defective or disconnected)
H30 Outdoor discharge pipe temperature
sensor abnormality
●
·
Outdoor discharge pipe temperature
sensor
(defective or disconnected)
H32 Outdoor heat exchanger
temperature sensor 2 abnormality
●
·
Outdoor heat exchanger temperature
sensor 2 abnormality
(defective or disconnected)
H98 Indoor high pressure protection -
·
Air filter dirty
·
Air circulation short circuit
H99 Indoor heat exchanger anti-freezing
protection
-
·
Insufficient refrigerant
·
Air filter dirty
F11 Cooling/Heating cycle changeover
abnormality
4 times
occurrence within
40 minutes
-
·
4-way valve
·
V-coil
F91 Refrigeration cycle abnormality 2 times
occurrence within
30 minutes
-
·
No refrigerant (3-way valve is closed)
F93 Compressor motor rotation
abnormality
2 times
occurrence within
30 minutes
-
·
Compressor
·
Outdoor P.C.Board
F95 Over heating protections 3 times
occurrence within
30 minutes
-
·
Pipe sensor
F96 Outdoor power transistor module
overheating protection
4 times
occurrence within
30 minutes
-
·
Excess refrigerant
·
Improper heat radiation
·
Power transistor
F97 Outdoor compressor overheating
protection
4 times
occurrence within
20 minutes
-
·
Insufficient refrigerant
·
Compressor
F98 Total running current protection 3 times
occurrence within
30 minutes
-
·
Excess refrigerant
·
Improper heat radiation
F99 Outdoor Direct Current (DC) peak
detection
2 times
occurrence
continuously
-
·
Outdoor PCB
·
Power transistor
·
Compressor
1. Current Transformer Defective
When the Current Transformer (CT) is an open circuit, total running current is less than 1.51 A and the indicated frequency is
Rated frequency. After 3 minutes of operation, the abnormality signal is sent from outdoor to indoor and [H16] is displayed.
2. 4 Way Valve Defective
a. Heating Operation (except Deice)
After 4 minutes of operation, the indoor heat exchanger temperature is lower than 5°C. The operation stops and restarts
after 3 minutes. If this phenomenon occurs for 4 times within 40 minutes, [F11] is displayed.
b. Cooling Operation
After 4 minutes of operation, indoor heat exchanger temperature is higher than 45°C. The operation stops and restarts after
3 minutes. If this phenomenon occurs for 4 times within 40 minutes, [F11] is displayed.
The abnormality judgement is not carried out, in the following conditions:
- deice operation
- 2 minutes after deice operation
- hot start
- 2 minutes after hot start
- 3 minutes after heating and cooling/soft dry mode changeover
59
CS-MVG103KE / CU-MVG153KE