Page 1 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual Issue Date 2025-03-03 HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei Digital Power Technologies Co., Ltd. and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...
Page 3: About This Document
Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results. NOTICE is used to address practices not related to personal injury. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 4: Change History
19.6 How Do I Fill Refrigerant? Issue 04 (2024-12-31) Added 6 Replacing a DCDC. Updated 19.4 How Do I Use the Coolant Filling/Drainage Machine to Add or Drain Coolant? Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 5 4.3 Replacing a BMU Collection Board. Updated 8.9 Replacing an LTMS NTC Cable Harness. Updated 13 Replacing an Emergency Stop Switch. Issue 01 (2024-07-31) This issue is used for first office application (FOA). Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 6: Table Of Contents
4.5.2 Replacing an NTC Cable Harness on the General Positive and Negative Power Component....96 5 Replacing a PCS........................98 6 Replacing a DCDC....................... 112 7 Replacing the RCM......................126 7.1 Replacing an Entire RCM..............................127 Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 7 16 Replacing a T/H Sensor....................217 17 (Optional) Replacing a SmartLogger................219 18 Emergency Handling......................222 19 FAQ............................225 19.1 How Do I Recycle Used Batteries?..........................225 19.2 How Do I Repair Paint Damage?..........................226 Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 8 19.6.3.2 Vacuumizing................................253 19.6.3.3 Precharging the Refrigerant..........................255 19.6.4 (Optional) Charging the Remaining Refrigerant....................256 A Contact Information......................259 B Digital Power Customer Service..................261 C Acronyms and Abbreviations................... 262 Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 10: Personal Safety
D ANGER During operations, use dedicated insulated tools to prevent electric shocks or short circuits. The dielectric withstanding voltage level must comply with local laws, regulations, standards, and specifications. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 11: General Requirements
Personnel who will perform special tasks such as electrical operations, working at heights, and operations of special equipment must possess the required local qualifications. ● Only certified high-voltage electricians are allowed to operate medium- voltage equipment. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 12: Electrical Safety
Observe the power plant safety regulations, such as the operation and work ticket mechanisms. ● Install temporary fences or warning ropes and hang "No Entry" signs around the operation area to keep unauthorized personnel away from the area. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 13 Do not use solvents such as water, alcohol, or oil to clean electrical components inside or outside of the equipment. Grounding ● Ensure that the grounding impedance of the equipment complies with local electrical standards. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 14: Cabling Requirements
24 hours before they are laid out. ● Do not perform any improper operations, for example, dropping cables directly from a vehicle. Otherwise, the cable performance may deteriorate due Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 15: Environment Requirements
1.3 Environment Requirements D ANGER Do not expose the equipment to flammable or explosive gas or smoke. Do not perform any operation on the equipment in such environments. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 16 Do not install the equipment in an area conducive to the growth of microorganisms such as fungus or mildew. ● Do not install the equipment in an area with strong vibration, noise, or electromagnetic interference. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 17: Mechanical Safety
Do not mount it on an insecure moveable object or metal object with sharp edges. Make sure that the hooks will not slide off. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 18 ● Use correct tools and operate them in the correct way. Moving Heavy Objects ● Be cautious to prevent injury when moving heavy objects. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 19 The tilt angle α of a cabinet with packaging must be less than or equal to 15°. After the cabinet is unpacked, its tilt angle α must be less than or equal to 10°. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 20: Working At Heights
● Behave cautiously when working at heights. Do not rest at heights. Using Ladders ● Use wooden or insulated ladders when you need to perform live-line working at heights. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 21 Do not drag steel ropes and hoisting tools or bump the hoisted objects against hard objects during hoisting. ● Ensure that the angle between two hoisting ropes is no more than 90 degrees, as shown in the following figure. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 22: Equipment Safety
If the ESS is faulty, do not stand within the opening range of the cabinet doors. CA UTION Evacuate from the site immediately once the fire alarm horn/strobe is triggered. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 23: Battery Safety
To avoid leakage, smoke, flammable gas release, thermal runaway, fire, or explosion, do not disassemble, alter, or damage batteries, for example, insert foreign objects into batteries, squeeze batteries, or immerse batteries in water or other liquids. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 25 ● Force majeure such as earthquakes, floods, volcanic eruptions, debris flows, lightning strikes, fires, wars, armed conflicts, typhoons, hurricanes, tornadoes, and other extreme weather conditions Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 26 Do not use a damaged battery (such as damage caused when a battery is dropped, bumped, bulged, or dented on the enclosure), because the damage may cause electrolyte leakage or flammable gas release. In the case of Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 27 Instead, transport the batteries to a safe isolation point and contact technical engineers in a timely manner. ● In backup power scenarios, do not use the batteries for the following situations: Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 28: Short Circuit Protection
Do not place waste batteries in environments with high humidity or corrosive substances. ● Do not use faulty batteries. Contact a battery recycling company to scrap them as soon as possible to avoid environmental pollution. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 29: Routine Maintenance
● After the maintenance or repair is complete, remove the ground cable between the loop that has been maintained and the main ground loop. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 30: Preparations Before Maintenance
This section lists only personal protective equipment. For details about the tools required for replacement, see the specific parts replacement section. Insulated gloves Protective gloves Goggles Dust mask Insulated shoes Reflective vest Safety helmet Safety harness Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 31: Routine Maintenance
6 months, lead screw. maintain it every 6 months. ● Butter, aluminum- based grease, composite grease can be used for lubricating the lead screw. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 33 Replace the protective tube for damaged protective tube in a timely communications manner and cable on the rear reinforce the falling of the cabinet is part. intact and secured. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 35 Check that the Reconnect the wiring terminals cables. at the rear of the electric control module are securely connected. Check that the Tighten the compressor is compressor screws. secured properly. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 36 Check that the Replace the LTMS. liquid cooling condenser does not leak. Check that the Replace the LTMS. liquid cooling evaporator does not leak. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 37 Check that all Replace the faulty cables are intact. cable. Check that all Tighten the screws cable wiring and reconnect the screws are cables. tightened and all terminals are secured. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 38 Check that cables Replace the faulty are intact, cable. especially that the cable sheath contacting a metal surface is intact. Check that the PE Ensure reliable cable is securely grounding. connected. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 40 Note [1]: In harsh scenarios such as deserts and catkins, perform maintenance based on the site requirements to ensure that there is no blockage or dust buildup. If the dirt or blockage is severe, increase the maintenance frequency. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 41: Replacement Of Components With A 10-Year Service Life
9.4 Replacing Male Connectors of the Liquid Cooling Pipe Stop Valves. Coolant For details, see 19.4 How Do I Use the Coolant Filling/ Drainage Machine to Add or Drain Coolant? Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 42: Powering Off The Ess
If any alarm is generated, handle the alarm according to the alarm handling suggestions. Step 3 Click Monitoring, view the device status, and ensure that the shutdown is successful. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 43: Power-Off Operations
B: General power distribution switch of customer's power distribution cabinet the customer's power distribution cabinet Step 1 Turn off the general power distribution switch of the customer's power distribution cabinet. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 44 Step 12 Reinstall the protective cover to the mains AC input wiring terminal (MAINS). If a UPS is configured, install the protective cover to the UPS AC input wiring terminal (UPS). Step 13 Reinstall the RCM cover. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 45: Alarm Reference
LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 3 Alarm Reference Alarm Reference For details about the alarms, see LUNA2000-(107-215) Series Smart String ESS Alarm Reference. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 46: Replacing A Battery Pack
Keep batteries in the correct direction during transportation. They must not be placed upside down or tilted, and must be protected against falling down, mechanical impact, rains, snows, and falling into water during transportation. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 47 ● Prevent nuts from falling off during removal and installation. After removing nuts, ensure that no residue is left to avoid short circuits. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 48: Fixture
● Place the ladder close to the handwheel and align it with the fixture. Stand on the ladder to operate the handwheel and observe the fixture connection and battery installation progress. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 49: Replacing An Entire Battery Pack
(12) Battery connecting rod (13) Extension arm (14) Panel maintenance fixture - 4.2 Replacing an Entire Battery Pack Context The packs are numbered 1 to 4 from bottom to top. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 51 If the liquid cooling bottom plate of the battery pack leaks and the battery pack looks normal without irritating odor, remove the faulty battery pack. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 52 Step 4 Remove the cables and pipes from the front panel of the battery pack, prepare cable labels, and keep them properly. Remove the power terminal. Select a removal method based on the appearance of the power terminal. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 53 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-2 Method 1 for removing the power terminal Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 54 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-3 Method 2 for removing the power terminal Remove the PV terminals from the pack. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 55 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-4 Removing the left PV terminal from the pack Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 56 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-5 Removing the right PV terminal from the pack Remove the communications cable. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 57 Retain the old male connector. Remove the PE cable. NO TICE Put the disconnected branch liquid cooling pipes in the clip on the inner side of the cabinet to prevent the pipe from warping. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 58 Step 6 Take out the battery pack maintenance fixture (pack fixture for short). Remove the fixture binding straps. Take out the pack fixture. Take out the cabinet connecting rod and battery connecting rod. Install the hooks and lift the pack fixture. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 59 Figure 4-9 Taking out the fixtures Step 7 Insert the forklift tynes into the pack fixture, adjust the tightness of the long bolt, and secure the pack fixture to the forklift. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 60 Use the forklift to lift the fixture until the drawer handle is slightly higher than the cabinet connecting rod. Keep the front end of the fixture 200–900 mm away from the pack to prevent collision. Figure 4-11 Installing the pack fixture Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 61 Rotate the handwheel clockwise, align the hole on the battery connecting rod retainer with the hole on the battery connecting rod, and insert the pin. Rotate the handwheel counterclockwise to pull the battery pack out of the ESS. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 62 Switch to position 2. Rotate the handwheel clockwise until the drawer handle is fully retracted, and remove the battery pack. Remove the battery connecting rod. Figure 4-14 Taking out the battery pack ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 63: Installing A New Battery Pack
Insert the forklift tynes into the fixture, adjust the tightness of the long bolt, and secure the pack fixture to the forklift. Figure 4-15 Securing the battery pack to the pack fixture (1) Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 64 Lower the forklift tynes until the drawer handle comes in contact with the mark on the cabinet connecting rod. Switch to position 1, rotate the handwheel clockwise, and push the front part of the battery pack into the cabinet. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 65 Rotate the handwheel clockwise to push the battery pack completely into the cabinet until the front end of the battery pack is flush with the guide rail of the cabinet. Figure 4-18 Pushing the battery pack completely into the cabinet Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 66 Install the screws on the other side of the battery pack and use a socket to tighten the screws on both sides. Remove the cabinet connecting rod. Remove the battery connecting rod. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 67 Figure 4-20 Securing the battery pack Step 6 Reinstall the cables and pipes on the battery pack front panel. Install the PE cable. Figure 4-21 Installing the PE cable Connect the communications cable. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 68 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-22 Connecting the communications cable Connect the PV terminals of the pack. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 69 4 Replacing a Battery Pack Figure 4-23 Connecting the PV terminals of the pack Connect the power terminal. Select a connection method based on the appearance of the power terminal. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 70 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-24 Method 1 for connecting the power terminal Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 71 The new male connector of the stop valve must be equipped with two sealing rings. Figure 4-26 Male connector with two sealing rings Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 72: Follow-Up Procedure
Step 3 Enable the WiFi function on the phone, log in to the FusionSolar app, connect to the ESS, and handle the Battery Pack Configuration Data Abnormal alarm. Log in to the FusionSolar app, access the local commissioning screen, choose Device Commissioning, and tap Alarms. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 73 Starting the upgrade: Choose Device Upgrade > Create > Select manually, set Device type to ESS, select the ESS to be upgraded, and set Target Version to the target version. Click OK to start the upgrade. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 74: Replacing A Bmu Collection Board
Step 1 Remove the cables and pipes from the front panel of the battery pack, prepare cable labels, and keep them properly. Remove the power terminal. Select a removal method based on the appearance of the power terminal. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 75 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-28 Method 1 for removing the power terminal Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 76 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-29 Method 2 for removing the power terminal Remove the PV terminals from the pack. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 77 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-30 Removing the left PV terminal from the pack Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 78 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-31 Removing the right PV terminal from the pack Remove the communications cable. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 79 Remove the PE cable. NO TICE Put the disconnected branch liquid cooling pipes in the clip on the inner side of the cabinet to prevent the pipe from warping. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 80 4 Replacing a Battery Pack Figure 4-33 Removing the PE cable Step 2 Install the maintenance fixture, and remove the screws securing the general power ports and panel in sequence. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 81 1: Slowly pull out the battery pack panel until the general power terminals are removed from the panel. 2–3: Cut off cable ties. 4–6: Remove the cable harness. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 82 Step 4 Remove the cable harness on the left side of the battery pack: Slowly remove the communications terminals from the panel, remove the cable harness on the left side of the battery pack, and mount the cable harness to the cable clip. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 83 Step 5 Remove the two cable clips from the front panel and slowly remove the panel. CA UTION Exercise caution when removing the panel from the battery pack to prevent dropping the panel or damaging the wiring terminals. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 84 NO TICE Any BMU collection board can be replaced separately. When removing a BMU collection board, remove the cable harness from the BMU collection board on the left. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 85 Left 2 Step 1 Remove the cable See the figures of the first BMU harness from the collection board on the left. first BMU collection board on the left. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 86 Left 3 Step 1 Remove the cable See the figures of the second BMU harness from the collection board on the left. second BMU collection board on the left. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 87 Step 1 Remove the cable See the figures of the second and harnesses from the third BMU collection boards on the second and third left. BMU collection boards on the left in sequence. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 88 Step 4 1–2: Press both ends of the FPC connector and remove it in the FPC flat cable direction. 3–4: Remove the cable harness plug. 5: Remove the cable shown in the figure. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 90: Follow-Up Procedure
Device Commissioning, and tap Alarms. NO TE For details about how to log in to the FusionSolar app and access the local commissioning screen, see FusionSolar App and SUN2000 App Device Commissioning Guide. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 91: Replacing A Balancing Dcdc Module
Step 1 Remove the cables and pipes from the front panel of the battery pack, prepare cable labels, and keep them properly. Remove the power terminal. Select a removal method based on the appearance of the power terminal. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 92 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-39 Method 1 for removing the power terminal Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 93 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-40 Method 2 for removing the power terminal Remove the PV terminals from the pack. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 94 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-41 Removing the left PV terminal from the pack Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 95 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 4 Replacing a Battery Pack Figure 4-42 Removing the right PV terminal from the pack Remove the communications cable. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 96 Remove the PE cable. NO TICE Put the disconnected branch liquid cooling pipes in the clip on the inner side of the cabinet to prevent the pipe from warping. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 97 4 Replacing a Battery Pack Figure 4-44 Removing the PE cable Step 2 Install the maintenance fixture, and remove the screws securing the general power ports and panel in sequence. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 98 1: Slowly pull out the battery pack panel until the general power terminals are removed from the panel. 2–3: Cut off cable ties. 4–6: Remove the cable harness. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 99 Step 4 Remove the cable harness on the left side of the battery pack: Slowly remove the communications terminals from the panel, remove the cable harness on the left side of the battery pack, and mount the cable harness to the cable clip. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 100 Step 5 Remove the two cable clips from the front panel, and remove the panel (that is, the balancing DCDC module). CA UTION Exercise caution when removing the panel from the battery pack to prevent dropping the panel or damaging the wiring terminals. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 101 Step 8 Install the communications terminals and bus terminal on the front panel, install the panel on the large window on the top cover using guide pins, and secure the panel. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 102 After the upgrade is complete, the device automatically restarts. Method 2: Upgrade the ESS software version on the FusionSolar app. Log in to the FusionSolar app and access the local commissioning screen. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 103: Replacing An Ntc Cable Harness In The Battery Pack
Phillips screwdriver (M4, length < 100 mm) ● You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 104: Replacing An Ntc Cable Harness On The General Positive And Negative Power Component
You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. ● At least two persons are required to replace an NTC cable harness on the general positive and negative power component. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 105 Step 5 Install the general power ports and assemblies and tighten the M8x20 screws to 13 N·m. Step 6 Install the general positive and negative power component. For details, see Replacing a BMU Collection Board. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 106: Replacing A Pcs
You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. ● At least four persons are required to replace the PCS. Procedure Step 1 Determine subsequent operations based on the ambient temperature. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 107 3. Mark the nuts whose torque has been verified using a marker. Figure 5-1 Removing the AC power cable Remove the power terminal. Select a removal method based on the appearance of the power terminal. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 108 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 5 Replacing a PCS Figure 5-2 Method 1 for removing the power terminal Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 109 Put the disconnected branch liquid cooling pipes in the clip on the inner side of the cabinet to prevent the pipe from warping. Figure 5-4 Disconnecting the female connector of the stop valve from the male connector Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 110 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 5 Replacing a PCS Remove the communications terminal. Figure 5-5 Removing the communications terminal Remove the PE cable. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 111 Remove the screws from the faulty PCS, hold the handles on both sides of the PCS, and pull the PCS to the fixture. Figure 5-7 Moving the PCS to the fixture Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 112 Take out a new PCS and install the lifting handles. Lift the PCS onto the fixture to avoid falling. Remove two lifting handles first. Slowly push the PCS into the ESS cabinet and remove the remaining lifting handles. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 113 Remove the screws from the fixture and keep them properly. After removing the fixture and restoring it to the lowest position, place the fixture back to the packing case and secure it. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 114 5 Replacing a PCS Figure 5-10 Completing PCS replacement Step 8 Reinstall the PCS cables and pipes. Connect the PE cable. Figure 5-11 Connecting the PE cable Connect the communications terminal. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 115 The new male connector of the stop valve must be equipped with two sealing rings. Figure 5-13 Male connector with two sealing rings Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 116 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 5 Replacing a PCS Figure 5-14 Connecting the stop valve Connect the power terminal. Select a connection method based on the appearance of the power terminal. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 117 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 5 Replacing a PCS Figure 5-15 Method 1 for connecting the power terminal Figure 5-16 Method 2 for connecting the power terminal Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 118: Follow-Up Procedure
Software Download tab page, and download the software package. Uploading the upgrade package: On the SmartLogger WebUI, choose Select a file, select the target software package, and click Upload. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 119 LUNA2000-(215-2S10, 215-2S12) Series Commercial and Industrial On-Grid Energy Storage Solution User Manual. ● Microgrid scenario: For details, see the LUNA2000-215-2S10 Commercial and Industrial Microgrid Energy Storage Solution User Manual. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 120: Replacing A Dcdc
You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. ● At least four persons are required to replace the DCDC. Procedure Step 1 Determine subsequent operations based on the ambient temperature. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 121 If not, confirm cables and prepare new labels. Remove the power terminal. Select a removal method based on the appearance of the power terminal. NO TE When removing power terminals, remove BAT– and then BAT+. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 122 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 6 Replacing a DCDC Figure 6-1 Method 1 for removing the power terminal Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 123 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 6 Replacing a DCDC Figure 6-2 Method 2 for removing the power terminal Remove the communications terminal. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 124 Retain the old male connector. NO TICE Put the disconnected branch liquid cooling pipes in the clip on the inner side of the cabinet to prevent the pipe from warping. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 125 Remove the screws that secure the faulty DCDC to the cabinet. Secure the fixture to the ESS. Hold the handles on both sides of the faulty DCDC and pull the DCDC to the fixture. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 126 Lift the DCDC onto the fixture to avoid falling, and then remove the lifting handles. Hold the handles on both sides and slowly push the DCDC into the ESS. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 127 Figure 6-9 Completing DCDC replacement WARNING When placing the DCDC on the fixture, ensure that most of the weight of the DCDC is on the fixture to avoid damage caused by falling. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 128 The new male connector of the stop valve must be equipped with two sealing rings. Figure 6-11 Male connector with two sealing rings Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 129 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 6 Replacing a DCDC Figure 6-12 Connecting the stop valve Connect the communications terminal. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 130 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 6 Replacing a DCDC Figure 6-13 Connecting the communications terminal Connect the power terminal. Select a connection method based on the appearance of the power terminal. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 131 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 6 Replacing a DCDC Figure 6-14 Method 1 for connecting the power terminal Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 132: Follow-Up Procedure
Log in to the FusionSolar app and access the local commissioning screen. NO TE For details about how to log in to the FusionSolar app and access the local commissioning screen, see FusionSolar App and SUN2000 App Device Commissioning Guide. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 133 Device type to ESS, select the ESS to be upgraded, and set Target Version to the target version. Click OK to start the upgrade. After the upgrade is complete, the device automatically restarts. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 134: Replacing The Rcm
● There are multiple models of RCMs. The actual product may vary. ● The figures in this chapter are for reference only. The appearance of each component (such as a power meter) inside the RCM may vary. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 135: Replacing An Entire Rcm
Log in to the FusionSolar app and access the local commissioning screen. NO TE For details about how to log in to the FusionSolar app and access the local commissioning screen, see FusionSolar App and SUN2000 App Device Commissioning Guide. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 136 At least two persons are required to replace the RCM. Procedure Step 1 Remove the maintenance compartment cover and cable protective cover. Figure 7-2 Removing the maintenance compartment cover and cable protective cover Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 137 7.5 Replacing a BCU. CA UTION When replacing the RCM, you must use the original BCU. Otherwise, data will be lost. Step 6 Install the RCM. Figure 7-4 Installing the RCM Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 138 1 to 6 seconds. Step 3 Enable the WiFi function on the phone, log in to the FusionSolar app, connect to the ESS, and handle the E-label Board Data Abnormal alarm. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 139: Replacing A Power Meter
You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. Procedure Step 1 Remove the maintenance compartment cover and the upper left cover inside. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 140 Step 3 After taking the faulty power meter out of the RCM, disconnect the cables from the faulty power meter and check whether the labels are intact. If not, confirm cables and prepare new labels. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 141: Replacing A Power Meter Fuse
You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. Procedure Step 1 Remove the maintenance compartment cover and the upper left cover inside. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 142 Step 3 Install a new fuse and close the fuse cover of the power meter. Step 4 Install the upper left cover inside and cover of the maintenance compartment. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 143: Replacing An Spd
2.5 Powering Off the ESS. D ANGER Do not replace the AC SPD during a thunderstorm. Procedure Step 1 Remove the maintenance compartment cover and the upper left cover inside. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 144 Figure 7-13 Removing the faulty surge protection module Step 3 Install a new surge protection module. Step 4 Install the upper left cover inside and cover of the maintenance compartment. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 145: Replacing A Bcu
Commissioning Guide. Choose Maintenance > Restore defaults, tap Clear All Data, and then tap Restore Factory Defaults. Table 7-2 Parameters Parameter Description Restore Factory Defaults Restore the factory defaults. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 146 Figure 7-16 Removing the faulty BCU Step 4 Disconnect cables from the faulty BCU, and label the cables. Step 5 Connect the cables to a new BCU based on the cable labels. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 147 Maintenance > Software Upgrade. Downloading the upgrade package: Log in to the Support-E website, search for the corresponding ESS software version on the Software Download tab page, and download the software package. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 148: Replacing An Rcm Fan
7.6 Replacing an RCM Fan Prerequisites ● Tools: Phillips insulated torque screwdriver (M3 and M4), flat-head insulated torque screwdriver (M3), insulated torque socket wrench (M8, including 13# socket), cable cutter, and cable ties Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 149 RCM cable protective cover. Check whether the labels are intact. If any label is missing, check the cable and prepare a label. Step 3 Take the RCM out of the cabinet. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 150 Step 5 Disconnect cables from the faulty RCM fan, and label the cables. Step 6 Connect the cables to a new RCM fan according to the cable labels. Step 7 Install the new RCM fan. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 151 CA UTION Connect cables according to the cable labels and port silk screens. Otherwise, the device may be damaged. Step 10 Install the cable protective cover and maintenance compartment cover. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 152 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 7 Replacing the RCM Figure 7-24 Installing the cable protective cover and maintenance compartment cover ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 153: Replacing An Ltms
● When moving and transporting the LTMS, keep it upright. Do not place it horizontally or upside down. If the package of the LTMS is damaged or the tilt indicator on the package has changed color, contact the Company's service engineers. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 154 (delivered with spare parts), Phillips insulated torque screwdrivers (M3, M4, and M6), flat-head insulated torque screwdriver, coolant filling/drainage machine (purchased on the configurator), ladder, cable cutter, coolant, and cable ties Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 155 Figure 8-2 Disconnecting the LTMS from the pipes Step 3 Remove the cables between the LTMS and the RCM. Cut off the cable ties and remove the communications cable. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 156 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 8 Replacing an LTMS Figure 8-3 Removing the communications cable Remove the RCM maintenance compartment cover and cables. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 157 – Use an insulated socket wrench with an extension bar longer than 40 mm. – During the operation, handle and collect screws with caution to prevent them from falling off. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 158 Stably hold the LTMS, with one person standing on each of the left and right sides. Slowly raise the tynes to lift the faulty LTMS and slowly reverse the forklift to move the LTMS to a safe place. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 159 LTMS, slowly align it with the screw installation positions using the forklift, and install the screws. Remove the lifting lugs and install the plugs for the hoisting positions. Reinstall the protective cover for the main control module. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 160 Step 7 Connect cables, pipe clamps, and liquid cooling pipes based on labels. Step 8 Add coolant. For details, see 19.4 How Do I Use the Coolant Filling/Drainage Machine to Add or Drain Coolant? ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 161: Replacing An Ltms Dehumidifying Fan
Step 2 Disconnect the quick connector of the dehumidifying fan and check whether the labels are intact. If not, confirm cables and prepare new labels. Step 3 Remove the faulty dehumidifying fan. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 162: Replacing An Ltms Outdoor Fan
If not, confirm cables and prepare new labels. For details about how to remove the cable harness, see 8.9 Replacing an LTMS NTC Cable Harness. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 163 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 8 Replacing an LTMS Step 3 Remove the coolant pipe from the outdoor fan. Step 4 Remove the faulty outdoor fan. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 164 Figure 8-10 Removing the faulty outdoor fan (using FAN2 on the right as an example) Step 5 Install a new outdoor fan and tighten the M6 screws to 3 N·m. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 165 NO TICE When applying glass cement, ensure that there is no gap between the cables and the cable holes. Figure 8-11 Applying glass cement Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 166 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 8 Replacing an LTMS Figure 8-12 Filling cable holes with glass cement Step 7 Reinstall the pipes and cables, and properly bind the cables. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 167: Replacing An Ltms Main Control Module
Step 1 Remove the protective cover from the LTMS main control module. Figure 8-13 Removing the protective cover from the main control module Step 2 Remove the fixing bracket from the LTMS main control module. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 168 Step 7 Install the fixing bracket and protective cover for the LTMS main control module. Tighten M3 Phillips screws to 0.6 N·m and tighten M6 Phillips screws to 5 N·m. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 169 1 to 6 seconds. Step 4 Enable the WiFi function on the phone, log in to the FusionSolar app, connect to the ESS, and change the coolant replacement interval. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 170: Replacing An Ltms Main Control Backplane
Step 3 Disconnect the cables from the faulty main control backplane and check whether the labels are intact. If not, confirm cables and prepare new labels. Step 4 Remove the faulty main control backplane. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 171: Replacing The Ltms Drive And Auxiliary Power Module (Compressor Drive Module)
You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. Procedure Step 1 Remove the protective cover from the LTMS main control module. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 172 Figure 8-19 Removing the fixing bracket from the main control module Step 3 Turn the locking switch upward to unlock the faulty drive and auxiliary power module, and remove the module. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 173 For details about how to log in to the FusionSolar app and access the local commissioning screen, see FusionSolar App and SUN2000 App Device Commissioning Guide. On the home screen, choose Maintenance > Upgrade. The Upgrade screen is displayed. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 174: Replacing An Ltms Outdoor Heat Exchanger
For details about how to remove the cable harness, 8.9 Replacing an LTMS NTC Cable Harness. Step 3 Close the valve at the bottom of the heat exchanger. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 175 Step 4 Remove the liquid cooling pipe of the heat exchanger from the pipe clamps. Figure 8-22 Removing the pipe from the pipe clamps Step 5 Remove the faulty outdoor heat exchanger and pipes. Use clamp pliers to loosen the clamp. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 176 8.9 Replacing an LTMS NTC Cable Harness. Step 8 Add coolant. For details, see 19.4 How Do I Use the Coolant Filling/Drainage Machine to Add or Drain Coolant? ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 177: Replacing An Ltms Filter Board
Figure 8-24 Removing the front baffle plate of the filter board Step 2 Disconnect the cables and check whether the labels are intact. If not, confirm cables and prepare new labels. Step 3 Remove the filter board fasteners. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 178 Step 8 Install the filter board and front baffle plate and tighten the M3 Phillips screws to 0.3 N·m. Step 9 Install the filter board in the LTMS and tighten the M5 Phillips screws to 3 N·m. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 179: Replacing An Ltms Ntc Cable Harness
You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. Procedure Step 1 Cut off cable ties. Step 2 Remove the cylindrical cable routing tool. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 180 NO TICE When applying glass cement, ensure that there is no gap between the cables and the cable holes. Figure 8-28 Applying glass cement Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 181 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 8 Replacing an LTMS Figure 8-29 Filling cable holes with glass cement Step 8 Reinstall the cylindrical cable routing tool in the cabinet. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 182: Replacing Ltms Pipes
● Handle the liquid cooling pipe stop valve with caution to prevent foreign matter from falling into the stop valve, which will affect the sealing performance of the stop valve. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 183: Replacing A Battery Pack Coolant Return Pipe
(you only need to press the stop valve and do not need to remove it) before removing and inserting it. Figure 9-1 Before the removal and insertion 9.1 Replacing a Battery Pack Coolant Return Pipe Prerequisites Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 185 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 9 Replacing LTMS Pipes (1) Plastic quick (2) Clamp (3) Rubber pipe connector of the two- way stop valve for the main pipe (male and female) Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 186 Disconnect the female connector of the pipe stop valve from the male connector on the LTMS. Remove the pipe from the pipe clamps. Figure 9-2 Removing the coolant return pipe from the battery pack Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 187: Replacing A Battery Pack Coolant Supply Pipe
Step 5 Add a proper amount of coolant. For details, see 19.4.3 Adding Coolant to the LTMS. ----End Follow-up Procedure Check the running status of the liquid cooling pipe. 9.2 Replacing a Battery Pack Coolant Supply Pipe Prerequisites Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 189 (male and female) (4) Clamp (5) Plastic quick (6) Pipe clamp connector of the two- way stop valve for the branch pipe (female) Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 190 Remove the pipe from the pipe clamps. Figure 9-3 Disconnecting the pipe Step 4 Rotate the pipe clamps counterclockwise until they are removed from the cabinet and LTMS. Dispose of the pipe clamps. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 191: Replacing A Pcs/Dcdc Pipe
Step 6 Add a proper amount of coolant. For details, see 19.4.3 Adding Coolant to the LTMS. ----End Follow-up Procedure Check the running status of the liquid cooling pipe. 9.3 Replacing a PCS/DCDC Pipe Prerequisites Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 193 (3) Clamp (4) Clamp (5) Clamp (6) Clamp (7) Rubber pipe (8) Clamp (9) Plastic quick connector of the two- way stop valve for the main pipe (male and female) Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 194 LTMS. Remove the positioning sheet metal block for the pipe extending beyond the door (tightened using M4 Phillips screws). Remove the pipe from the pipe clamps. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 195 Step 6 Add a proper amount of coolant. For details, see 19.4.3 Adding Coolant to the LTMS. ----End Follow-up Procedure Check the running status of the liquid cooling pipe. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 196: Replacing Male Connectors Of The Liquid Cooling Pipe Stop Valves
(purchased on the configurator) ● You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 197 Step 2 After disconnecting the female connectors from the male connectors of the liquid cooling pipes, remove the male connectors of the stop valves on the LTMS and PACK/PCS/DCDC. Figure 9-5 Removing the male connectors of the stop valves ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 198: Installing Male Connectors Of The Liquid Cooling Pipes
You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. Procedure Step 1 Drain all the coolant from the cabinet. For details, see 19.4.1 Draining Coolant from the LTMS. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 199 9 Replacing LTMS Pipes Step 2 Install the male connectors of the stop valves on the LTMS and PACK/PCS/DCDC. Figure 9-6 Installing the male connectors of the stop valves ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 200: Replacing A Fire Suppression System
LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 10 Replacing a Fire Suppression System Replacing a Fire Suppression System Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 201: Replacing A Smoke Detector
You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. Procedure Step 1 Hold the faulty smoke detector by hand, and rotate it counterclockwise to remove it from the base. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 202 Step 5 Connect the cables based on the labels, and tighten the M2.5 Phillips screws to 0.4 N·m. Step 6 Hold the new smoke detector by hand, and rotate it clockwise until it snaps into place. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 203: Replacing A Heat Detector
You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. Procedure Step 1 Hold the faulty heat detector by hand, and rotate it counterclockwise to remove it from the base. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 204 Step 5 Connect the cables based on the labels, and tighten the M2.5 Phillips screws to 0.4 N·m. Step 6 Hold the new heat detector by hand, and rotate it clockwise until it snaps into place. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 205: Replacing A Co Sensor
You have shut down the ESS. For details about how to shut down the ESS, see 2.5 Powering Off the ESS. Procedure Step 1 Record the DIP switch settings. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 207: Replacing A Fire Alarm Horn/Strobe
Step 1 Disconnect cables between the display module and the faulty fire alarm horn/ strobe and check whether the labels are intact. If not, confirm cables and prepare new labels. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 208 Step 4 Install a new fire alarm horn/strobe and tighten the M3 Phillips screws to 0.6 N·m. Step 5 Install the rear cover of the display module and tighten the M3 Phillips screws to 0.6 N·m. Step 6 Reinstall the cables. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 209: Replacing A Display Module
LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 11 Replacing a Display Module Replacing a Display Module Prerequisites Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 210 Step 2 Remove the liquid cooling pipe shown in the figure from the four pipe clamps, gently pull the pipe outward to leave sufficient space, and remove the rear cover of the display module. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 211 Step 3 Remove the light pipe and light pipe support from the display module. Figure 11-3 Removing the light pipe and light pipe support Step 4 Remove the control board of the faulty display module. Figure 11-4 Removing the control board Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 212 Step 7 (Optional) Install the front panel of the display module and tighten the M3 Phillips screws to 0.6 N·m. Step 8 Apply sealant evenly to the rubber strips on the front panel of the display module outside the ESS cabinet door. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 213 After you tap Update Now, check that the ESS enters the upgrade status. After the upgrade is complete, the device automatically restarts. Method 3: Upgrade the ESS software version on the SmartPVMS. Log in to the SmartPVMS client. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 214 Device type to ESS, select the ESS to be upgraded, and set Target Version to the target version. Click OK to start the upgrade. After the upgrade is complete, the device automatically restarts. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 215: Replacing A Travel Switch
LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 12 Replacing a Travel Switch Replacing a Travel Switch Prerequisites Figure 12-1 Position of the travel switch Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 216 Step 2 Remove the faulty travel switch. Step 3 Install a new travel switch and tighten the M4 Phillips screws to 1.6 N·m. Step 4 Connect the cables based on the labels. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 217: Replacing An Emergency Stop Switch
Prerequisites Figure 13-1 Position of the emergency stop switch ● Tools: insulated torque socket wrench (M4, 7# socket), Phillips insulated torque screwdriver (M6), and flat-head insulated torque screwdriver (M3) Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 218 Step 9 Reinstall the cables to the emergency stop switch and bind them. Ensure that the silk screens on the cables are consistent with those on the emergency stop switch. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 219 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 13 Replacing an Emergency Stop Switch Figure 13-3 Installing the emergency stop switch ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 220: Replacing A Water Sensor
LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 14 Replacing a Water Sensor Replacing a Water Sensor Prerequisites Figure 14-1 Positions of the water sensors Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 221 Step 2 Remove the faulty water sensor. Remove the faulty water sensor. Turn over the faulty water sensor. Remove the screws from the faulty water sensor, remove the cables, and label the cables. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 222 Step 3 Connect the cables to the new water sensor and tighten the M3 Phillips screws to 0.6 N·m. Step 4 Install the water sensor. Step 5 Install the cable baffle plate and tighten the M6 nuts to 5 N·m. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 223: Replacing A Door Status Sensor
LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 15 Replacing a Door Status Sensor Replacing a Door Status Sensor Prerequisites Figure 15-1 Position of the door status sensor Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 224 Step 5 Install a new door status sensor and tighten the M3 Phillips screws to 0.6 N·m. Step 6 Connect the cables based on the labels. Step 7 Install the enclosure of the new door status sensor. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 225: Replacing A T/H Sensor
LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 16 Replacing a T/H Sensor Replacing a T/H Sensor Prerequisites Figure 16-1 Positions of the T/H sensors Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 226 Step 4 Set the DIP switches for a new T/H sensor based on the recorded information. Step 5 Install the new T/H sensor. Step 6 Connect the cables based on the labels. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 227: Optional) Replacing A Smartlogger
LUNA2000-(107-215) Series Smart String ESS Maintenance Manual 17 (Optional) Replacing a SmartLogger (Optional) Replacing a SmartLogger Prerequisites Figure 17-1 Position of the SmartLogger Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 228 Step 1 Remove the SmartLogger protective cover and cables, and check whether the labels are intact. If not, confirm cables and prepare new labels. Figure 17-2 Removing the SmartLogger protective cover Step 2 Remove the faulty SmartLogger. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 229 Step 4 Install the new SmartLogger. Step 5 Install the SmartLogger protective cover and tighten the M4 Phillips screws to 1.6 N·m. Step 6 Connect the cables based on the labels. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 230: Emergency Handling
If any part of the batteries is submerged in water, do not touch the batteries to avoid electric shock. ● Do not use batteries that have been soaked in water. Contact a battery recycling company for disposal. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 231 When a fire occurs, evacuate from the building or equipment area, press the fire alarm bell, and immediately call the fire emergency service. Notify the professional firefighters and provide them with relevant Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 232 Do not open the doors of the ESS before it is deemed safe by professionals. Follow local fire fighting regulations. When a fire occurs, prevent the fire from spreading to nearby ESSs. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 233: Faq
NO TE You need to cover the related transportation expenses. Step 4 Recycling agencies handle recycling. The recycled lithium batteries are at the disposal of the recycling agencies. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 234: How Do I Repair Paint Damage
The equipment appearance shall be intact. If paint has flaked off, repair paint damage immediately. NO TE Check the paint damage on the equipment and prepare appropriate tools and materials. The number of materials depends on site requirements. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 235 2. If a dent is greater than 100 mm area or greater than 3 mm in depth, ask the local supplier for an appropriate repainting solution. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 236 Step 4 Apply paint evenly to the damaged area based on the damage degree of the paint using an aerosol spray, brush, or paint spray gun until all damage traces are invisible. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 237 Table 19-2 Paint requirements Item Requirement Primer thickness 60 μm Intermediate coat thickness 120 μm Top coat thickness 60 μm Primer type Epoxy zinc-rich paint Intermediate coat type Zinc-rich paint Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 238: How Can I Export Device Logs
NO TE The following is a paint model list provided by Huawei. The list may be updated from time to time and is for reference only. The cost of paint and technical services is subject to the local pricing standards.
Page 239: How Do I Use The Coolant Filling/Drainage Machine To Add Or Drain Coolant
ESS. Draining of life (10th Coolant from year). the LTMS 19.4.2 Draining Coolant from PACK/PCS/ DCDC The LTMS is Replace the 19.4.1 Draining faulty. LTMS. Coolant from the LTMS Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 240 Heating in an empty container may cause an explosion. ● Take protective measures because coolant can irritate your eyes, skin, and throat. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 241 Otherwise, the coolant service life may be affected after the residual coolant deteriorates. ● Ensure that the coolant bucket (≥ 20 L) is clean, dry, and free from contamination. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 242 Single ESS in off-grid mode: ● If the UPS has no power: ● If Huawei grid-forming inverters are used, the PV system can be used to supply power in grid forming mode. ● If other stable power supplies are used, the power supply specifications are as follows: ●...
Page 243: Draining Coolant From The Ltms
Tools: Phillips insulated torque screwdriver (M6), non-absorbent insulated gloves, mask, and goggles ● You have prepared the coolant filling/drainage machine (including the machine power cable). You may purchase the machine from Huawei. ● You have prepared a clean coolant bucket (≥ 20 L) by yourself. ●...
Page 244 Connect the inlet pipe to the drain valve port at the bottom of the LTMS heat exchanger. NO TE Before connecting the coolant inlet pipe, check whether the port of the drain valve is dirty. If yes, use a cotton swab to clean it. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 245 Open the drain valve at the bottom of the heat exchanger to drain coolant. If no coolant is drained from the drain pipe for 30s, the drainage is complete. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 246 Remove the coolant filling and drain pipes connected to the machine. Remove the outlet pipe from the coolant bucket. Install the pressure relief cover of the tank. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 247: Draining Coolant From The Pack/Pcs/Dcdc
Tools: Phillips insulated torque screwdriver (M6), non-absorbent insulated gloves, mask, and goggles ● You have prepared the coolant filling/drainage machine (including the machine power cable). You may purchase the machine from Huawei. ● You have prepared a clean coolant bucket (≥ 20 L) by yourself. ●...
Page 248 Step 3 Open the ESS door and power off the ESS. For details, see 2.5 Powering Off the ESS. Step 4 Open the upper and lower doors of the LTMS. Step 5 Open the pressure relief cover of the tank. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 249 Remove the coolant inlet connector IN, and connect the auxiliary pipe connector to the original position. Ensure that the auxiliary pipe connector is vertically upward. Close the ball valve at the inlet pipe. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 250 Step 9 Remove the machine. Turn the power knob of the machine to OFF. Switch the machine to the Auto mode. Ensure that the ball valve at the inlet pipe is closed. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 251 Remove the coolant filling and drain pipes connected to the machine. Figure 19-12 Removing the coolant filling/drainage machine for the battery pack/PCS/DCDC Step 10 Install the pressure relief cover of the tank. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 252: Adding Coolant To The Ltms
(all coolant in the ESS ≤ 20 L). Purchase coolant from the Company. Coolant of different brands cannot be used together. Procedure Step 1 Open the machine door and take out the pipes and fittings. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 253 Connect the coolant filling and drain pipes to the inlet and outlet of the machine. When you hear a click, the connectors snap into place properly. Insert the inlet pipe into the coolant bucket to ensure that coolant can be extracted. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 254 Connect the other end of the communications cable to the LTMS signal port. Figure 19-15 Installing the machine Step 6 Set the machine to the Auto mode, and rotate the Pump Speed knob clockwise to the middle position. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 255 Remove the communications cable from the machine and LTMS signal port. Remove the coolant filling and drain pipes connected to the machine. Remove the outlet pipe from the coolant bucket. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 256: How Do I Enable The Manual Exhaust Function Of The Ltms
19.5 How Do I Enable the Manual Exhaust Function of the LTMS? Prerequisites Log in to the SmartLogger WebUI/FusionSolar app/management system and check whether a pump exception alarm is generated. If yes, manually clear the Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 257 Select Automatic from the Liquid cooling mode drop-down list and click Submit. Choose Monitoring > Running Param > Basic Parameters. Select Running from the ESS startup/shutdown drop-down list. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 258: How Do I Fill Refrigerant
19-4. If the deviation between the saturation pressure and the measured internal pressure is greater than 0.1 MPa, the refrigerant does not meet the requirements and needs to be replaced. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 259 7.27 12.21 4.15 7.48 12.53 4.29 12.85 4.43 7.93 13.18 4.58 8.15 13.51 4.73 8.39 13.85 4.88 8.63 14.2 5.04 8.87 14.55 5.21 9.12 14.92 5.37 9.37 – – Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 260: Injecting Nitrogen For Pressure Preservation
(2) Reducing valve (3) Electronic (4) Electronic cylinder pressure gauge pressure gauge (precision: ≥ 0.001 (precision: ≥ 0.001 MPa; MPa; measurement measurement range: ≥ 2.6 MPa) range: ≥ 2.6 MPa) Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 261: Vacuumizing And Precharging Refrigerant
● Before vacuumizing, ensure that all connectors on the equipment are tightened. ● Ensure that the system is vacuumized completely. If the vacuumization is not performed or is not performed completely, the system may experience high pressure. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 263: Precharging The Refrigerant
Procedure Step 1 Take off the vacuum pump from the vacuumizing device, and replace the vacuum pump with a refrigerant cylinder. Figure 19-21 Precharging refrigerant Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 264: Optional) Charging The Remaining Refrigerant
Charge refrigerant to the standard amount. Otherwise, the devices may be damaged. ● The ESS has been powered on. For details, see the ESS power-on section in LUNA2000-(107-215) Series Smart String ESS User Manual. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 265 Step 4 Wait for 15 minutes, choose Monitoring > ESS > Running Info > Temperature control system, and check whether Discharge pressure of refrigerant system and Suction pressure of refrigerant system are within normal ranges according Table 19-6. Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 266 Set Setting status of compressor to 0 rpm based on the component location. Click Submit. Step 6 Ensure that no alarm is generated for the LTMS, set Diagnostic mode to Auto, and click Submit. ----End Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 267: Contact Information
To ensure faster and better services, we kindly request your assistance in providing the following information: ● Model ● Serial number (SN) ● Software version ● Alarm ID or name ● Brief description of the fault symptom Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 268 LUNA2000-(107-215) Series Smart String ESS Maintenance Manual A Contact Information NO TE EU Representative Information: Huawei Technologies Hungary Kft. Add.: HU-1133 Budapest, Váci út 116-118., 1. Building, 6. floor. Email: hungary.reception@huawei.com Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 269: B Digital Power Customer Service
LUNA2000-(107-215) Series Smart String ESS Maintenance Manual B Digital Power Customer Service Digital Power Customer Service https://digitalpower.huawei.com/robotchat/ Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 270: Acronyms And Abbreviations
Maintenance Manual C Acronyms and Abbreviations Acronyms and Abbreviations application battery control unit battery monitoring unit DCDC DC-DC Converter emergency power-off Energy Storage Rack energy storage system Flexible Printed Circuit Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 271 MBUS monitoring bus negative temperature coefficient PACK battery pack Power Converter System positive temperature coefficient RCCB residual current circuit breaker Rack Control Module state of charge uninterruptible power system Issue 07 (2025-03-03) Copyright © Huawei Digital Power Technologies Co., Ltd.

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