Must PH1800 PLUS 4K Manuale utente
Service Manual
PH1800 PLUS 4K/5K
Inverter/Charger
PH1800 PLUS 4K/5K
Service Manual
Service Manual
PH1800 PLUS 4K/5K
Table of Contents
1. General Information.................................................................................................... 1
1.1 Brief Introduction ....................................................................................................1
1.2 Basic Topology Introduction....................................................................................1
1.3 Overview of Inverter/Charger..................................................................................2
2. Fault and Troubleshooting.......................................................................................... 3
3. Maintenance Step....................................................................................................... 4
3.1 Maintenance...........................................................................................................4
3.1.1 To Check DC FUSE and Capacitance............................................................4
3.1.2 DC/DC Boost Module.....................................................................................5
3.1.3 Divers.............................................................................................................7
3.2 To Check BUS Module...........................................................................................11
3.2.1 Power Devices...............................................................................................11
3.2.2 IGBT Diver Circuit..........................................................................................12
3.3 To Check BUCK Circuit..........................................................................................13
3.3.1 Power Devices...............................................................................................13
3.3.2 Divers.............................................................................................................14
3.4 To Check Invert Full Bridge.....................................................................................15
3.4.1 To Inspect Power Components as below........................................................15
3.4.2 To Check Drivers............................................................................................15
3.5 To Check BUS Soft Start Circuit.............................................................................17
3.5.1 Plug-in Components.......................................................................................17
3.6 To Check the AC Switch-on Power Supply Circuit..................................................19
3.7 To Check the Battery Switch-on Power Supply Circuit...........................................21
3.8 To Check the MOSFETS for Reversed Protection on DC Terminal.......................23
3.9 To Check NTC Circuit.............................................................................................23
3.9.1 NTC in Position of HS1 Plug-in Position of CN8 on Main Board....................24
3.9.2 NTC1 Under Transformer...............................................................................26
3.9.3 NTC4 in HS3..................................................................................................26
3.10 To Check Fan Driver Circuit on Main Board..........................................................28
4. Other Common Faulty Cases......................................................................................28
4.1 MOSFET Burnt.......................................................................................................28
4.2 Input Cable Disconnection......................................................................................29
4.3 Dust-covered Control Board...................................................................................29
5. Assembling Guidance..................................................................................................29
6. Test Guidance after Repairing.....................................................................................33
Service Manual
PH1800 PLUS 4K/5K
- 1 -
1. General Information
1.1 Brief Introduction
This manual is used as a tool of inspection and repairing guidance for
PH18-4K/5K MPK (F), as well as instructions of assembling and testing. It is
best to have some electrical or electronic background knowledge. With this
guidance, hope it will help you to check and inspect the inverter/charger first by
yourself.
1.2 Basic Topology Introduction
The topology for 4KVA/5KVA shows as below:
Service Manual
PH1800 PLUS 4K/5K
- 2 -
1.3 Over review and Introduction of Inverter /charger Parts
LCD Display
Solar Charge
Controller Board
Main Board
Service Manual
PH1800 PLUS 4K/5K
- 3 -
2. Fault and Troubleshooting
No LCD
display when
inverter turns
on
First to test battery volt to check whether it is in range of 44v-52v;
If it is in the range, to switch the inverter one to check whether the
unit starts. If the unit does not run yet, please disconnect all
connections and open the surface panel, take out the main board,
then to check and repair according to 3.7
01
First to replace the fan, to check whether it is okay; if NG, please
inspect the main board and repair according to 3.11
02
Please to check the main board and repair according to 3.9
03
Please to check first and then to repair the main board according
to 3.1, 3.6 and 3.7
06
First to start up the inverter by only connecting battery, if the fault
is still on, please inspect the main board following 3.4
08
To restart the inverter, to check whether the fault repeats, if yes, it
requires to replace the control boards.
09
To Check the main board following 3.1.2, 3.2.1, 3.4.1 and 3.5 and
to repair accordingly
52
First to restart inverter by only connecting to battery, if fault
continues, then to check the main board according to 3.1.2 and
3.4
56
First to check the connection of battery cable, if good connection,
then please to check and repair the main board following 3.1.1
and 3.1.2 accordingly
57
To replace the control board
58
First to restart inverter by connecting battery only, to check
whether it is good?
Second to connect battery and Utility but to keep switch off,
checking whether inverter charges battery? Otherwise, to check
and repair main board according to 3.1.2, 3.2.1 and 3.4.1
accordingly
72
To replace the control board
Service Manual
PH1800 PLUS 4K/5K
- 4 -
3. Steps to Repair
3.1 Battery Working Mode Test
3.1.1 To Check DC FUSE and Capacitance
F3: 180-00045-00 (Fuse, 42*12*0.6mm, Purple Copper Plate with tin plated)
Positioning
Attribute
Reference Value
Failure Status
F3
Resistor
0 ohm
open
C8,C9,C12,C13: 140-00103-00 (Electrolytic Capacitor, AL 3300uF/63V 105℃18*45.5 BULK RAD)
If the capacitors explode as below, they need to be replaced.
Service Manual
PH1800 PLUS 4K/5K
- 5 -
3.1.2 DC/DC Boost Module
DC/DC MOSFET:
Q14/Q25/Q26/Q40, Q12/Q22/Q21/Q38, Q20/Q17/Q11/Q24, Q13/Q18/Q13/Q19
150-00052-00: MOSFET TI/CSD19505KCS 201A 80V N BULK TO-220
Service Manual
PH1800 PLUS 4K/5K
- 6 -
Positioning
Attribute
Reference Value
Failure Status
All MOSFET, 16pcs
Diode
SD:0.44V
DS:OL
Short-circuit
or Explosion
Note 1: When you use multi-meter to measure the resistance of MOSFET, due to the
capacitor in the circuit, it will cause the continuous wave of the value when you measure the
DS and GD; therefore we would recommend to measure the diode forward voltage of SD and
the resistor of GS; these two values can reflect the situation of the transistor correctly.
Note 2: If one or more than one of them were broken, please replace all of them. For 4K, the
main board has just 12pcs MOSFETS.
G
D
S
Service Manual
PH1800 PLUS 4K/5K
- 7 -
3.1.3 Divers
Note: when there are power devices or components are damaged, Divers are
usually required to check.
The reference resistors listed as below.
R53/R87/R92/R93, R42/R75/R78/R80, R70/R59/R41/R76, R81/R62/R52/R64
All the resistors are 100-10022-00 (RES CHIP TF1/4W 22F (1206))
Service Manual
PH1800 PLUS 4K/5K
- 8 -
E
Q43
Q16
To use Multi-meter to measure each resistors till to find out the broken ones
and to replace them, no need to change all the resistors.
Positioning
Attribute
Reference Value
Failure Status
All Resistors:
22 ohm
Resistor
22 ohm
Open Circuit
or other value
If resistors are need to replace, please check the diver transistors and
controlling IC.
Q46/Q48/Q41/Q43:150-00005-00 (Plug-in Transistor TOSHIBA/2SC2655-Y 2A 50V)
Q15/Q16/Q47/Q49:150-00004-00 (Plug-in Transistor TOSHIBA/2SA1020-Y 2A 50V)
Q48
Q49
Q47
Q46
Q15
B
C
Q41
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