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[7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ]
7-7-5
Error Codes [5111, 5112, 5115, 5116]
1. Error code definition
5111
Liquid inlet temperature sensor (TH11) fault (BC controller)
5112
Bypass outlet temperature sensor (TH12) fault (BC controller)
5115
LEV3 outlet temperature sensor (TH15) fault (BC controller)
5116
LEV3 inlet temperature sensor (TH16) fault (BC controller)
2. Error definition and error detection method
If a shorted (high temperature intake) or open (low temperature intake) thermistor (TH11, TH12, TH15, or TH16) is detected
during operation, the unit makes an error stop, and an error code "5111," "5112," "5115," or "5116" appears on the display.
Detection of a short- or open-circuit as described above is suspended during the defrost cycle and for 3 minutes after the
operation mode is changed.
3. Cause, check method and remedy
Cause
(1)
Thermistor failure
(2)
Pinched lead wire
(3)
Torn wire coating
(4)
A pin on the male connector is missing or
contact failure
(5)
Disconnected wire
(6)
Thermistor input circuit failure on the control
board
<Reference>
HWE13080
Check thermistor resistance.
Check for pinched lead wire.
Check for wire coating.
Check connector.
Check for wire.
Check the intake temperature of the sensor with the LED monitor.
When the temperature is far different from the actual temperature,
replace the control board.
Short detection
TH11
110 C [230 F ] and above (0.4 k )
-40 C [ -40 F ] and below (130 k )
TH12
110 C [230 F ] and above (0.4 k )
-40 C [ -40 F ] and below (130 k )
TH15
70 C [158 F ] and above (0.4 k )
-40 C [ -40 F ] and below (130 k )
TH16
110 C [230 F ] and above (0.4 k )
-40 C [ -40 F ] and below (130 k )
- 213 -
Check method and remedy
Open detection
GB
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Questions and answers
what is the set up mode for recovery, and charging of sys?
Why can control my indoor unit with centralize control
You may not be able to control your Mitsubishi Electric PURY-HP72 indoor unit with centralized control for the following reasons:
1. The power jumper connector on the outdoor unit may not be correctly set. It should be connected to CN40 on only one outdoor unit.
2. The central control switch (SW5-1) on the control board of all outdoor units must be set to "ON."
3. Address settings may not be correctly configured. The main indoor unit should be assigned the smallest address (e.g., IC00), and correct port number settings are required.
4. If using a remote controller alone, an interlock setting from the remote controller is needed.
5. Both ME and MA remote controllers cannot be connected to the same indoor unit group.
6. System controller power issues may occur if the outdoor unit fan rotates due to external forces, causing the system controller to detect an error.
7. Improper wiring or incorrect voltage at TB7 may also prevent operation.
Check each of these conditions to ensure proper centralized control.
This answer is automatically generated
Why can’t control indoor unit with centralize control and stay the MA control set up can’t. Control the mode
The Mitsubishi Electric PURY-HP72 indoor unit cannot be controlled with centralized control and the mode control setup does not function due to the following reasons:
1. Central control is not possible if the indoor/outdoor transmission line is used, even if TB7 terminals are daisy-chained.
2. Shielded cables must be used, and the connection must only be made after confirming the voltage is below 20 VDC.
3. Improper connection of the transmission line for centralized control, such as not correctly daisy-chaining terminals M1 and M2 or not short-circuiting the earth and S terminals on TB7.
4. If a power supply unit is not connected to the centralized control line, the power jumper connector must be moved from CN41 to CN40 on one outdoor unit—if this is not done, mode control will not function.
5. Overlapped indoor unit addresses or noise interference on the remote controller lines can also prevent proper control.
6. Failure to set one MA remote controller to MAIN or exceeding its capacity can result in control failure.
All these factors must be correctly configured for centralized and mode control to function properly.
This answer is automatically generated