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I nst al l at i o n & o pe r at i o n M a n ua l Air – Source Heat Pump Heater Model Numbers: WH250A-R WH250A-RE WH250A-C WH250A-CE Please read the manual carefully before using the product, and properly keep this manual for reference.
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Dear Users, Thank you for choosing our water heater. This manual is designed to be your comprehensive guide for the installation, operation, and maintenance of your new appliance. It also contains crucial safety information that is essential for ensuring the reliable and safe performance of the water heater.
Safety Precautions Prior to using this product, it is imperative that you thoroughly review the "Safety Precautions" chapter in this manual. This section outlines critical safety considerations that must be strictly adhered to. Please adhere to these guidelines diligently to ensure a secure and hazard-free usage experience.
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Warning 8. If the water heater is unused for more than 2 weeks, hydrogen, a highly flammable gas, may accumulate in the hot water piping system. Before using any electrical appliances connected to the hot water system, turn on the hot water faucet for a few minutes to reduce the risk. If hydrogen is present, you may hear an abnormal sound when water flows through the pipe.
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Attention 9. The external power box must have an air switch with leakage protection. Ensure reliable grounding before using the machine. 10. In the case where refrigerant filling is required: • It must be implemented by a qualified technician. • Fill according to the type and weight of refrigerant marked on the unit's nameplate.
Parts and Functions NOTE: This diagram is only for reference, and the appearance of the product may not be the same as that of the real object. Subject to the actual model. INSTALLATION & OPERATIONS MANUAL - DOC. NO.9000-01 VER.1 2312...
Installation Instructions Selection of installation site 1. It is advisable not to install this water heater indoors. If installed indoors, issues such as overflow, noise, and a drop in indoor temperature may occur, impacting your daily life. Please take preventive measures in advance. 2.
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Space requirement for installation & maintenance Model WH250A-R WH250A-C WH250A-RE WH250A-CE Parameter Diameter φD (mm) 2140 2140 2140 2140 Height H (mm) 1000 1000 1000 1000 Height H1 (mm) INSTALLATION & OPERATIONS MANUAL - DOC. NO.9000-01 VER.1 2312...
Pipeline Connection Pipeline Connection Instructions Attention 1. Do not install the water heater with iron pipes. Water systems should exclusively utilize new pipes that adhere to drinking water standards, such as CPVC, PPR pipes, or polybutene pipes. 2. DO NOT use PVC water pipes with an unusual odor. 3.
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Attention 1. Every six months, pull the handle of the temperature and pressure safety valve to eliminate calcium carbonate deposits and ensure the device is unobstructed. Due to the potential for very high-water temperatures at the outlet, exercise caution to prevent scalding. 2.
Usage Methods When using, please follow the sequence below: 1. Water Affusion: Before the unit is used for the first time or when the water tank is emptied and reused, ensure it is filled with water before powering on. Refer to the water affusion method provided in the figure below. Warning If an electric auxiliary heating unit is turned on when there is not water in the water tank, it will cause damage to the electric heating device.
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Operating Instructions 1. Display screen and operation panel Display symbol description Description Description Electric heating Heating mode state Setting Child lock temperature Fault state Tank temperature Timing state WIFl status Compressor state Clock display INSTALLATION & OPERATIONS MANUAL - DOC. NO.9000-01 VER.1 2312...
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Description of the keys Symbols Turn Unit Set Timer Setting Names Child Lock on/off After the unit is powered on, all symbols will be displayed on the display screen, and the normal pages will be displayed after waiting for 2 seconds. •...
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General Time Setting: • Press and hold the "Timer" key for 3 seconds, then release to enter the time setting. • The hours and minutes in the time display area will flash simultaneously. • Press "Timer" again to make the hours flash, then use the "Up" or "Down" key to adjust the hours.
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Parameter Inquiry: Press and hold the "Settings" key for 3 seconds to access the parameter inquiry page. This function is primarily designed for installation and maintenance by specialized personnel. Refer to the table below for detailed parameter information: Serial Code information Number Remarks number Tank temperature 1 (Thw 1)
Trial Operation Please confirm the following matters before trial operation 1. Whether the unit is installed correctly. 2. Whether the piping and wiring are correct. 3. Whether the drainage is smooth. 4. Whether the insulation is well done. 5. Whether the grounding wires are correctly connected. 6.
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12. Periodically remove the scale and discharge sewage from the water tank, typically every month based on local water quality. 13. Ensure the power plug and socket fit well, are grounded properly, and do not show signs of overheating. 14. For long periods of non-use, especially in low-temperature areas (below 0℃), discharge water from the inner tank to prevent freezing and damage.
Troubleshooting Faults Causes Troubleshooting Cold water • The power plug is not plugged in. flows out. Plug in the power plug. • The thermostat is in a low Adjust the temperature of the temperature control state. thermostat to a higher state. •...
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Replace magnesian stick ≥1450 1. To access the internal components, start by removing the screws located on the top and sides of the water heater. Disconnect the cable attached to the display screen, and carefully remove the top cover, as illustrated in figure 1. 2.
Power cord installation Ensure that the height of the power socket is positioned above the power line outlet to prevent water accumulation. If the socket is not elevated, reserve an appropriate length of power line to avoid ponding, as illustrated in the figure. In the event of malfunctions with your water heater, promptly shut it down and disconnect the power supply.
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3. App Registration: • Open the installed app. • Register an account and log in following the app prompts. 4. Device Preparation: • Turn on mobile WiFi and Bluetooth on (After the connection is successful, WiFi and Bluetooth can be turned off and the control will not be affected.) 5.
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8. Connection Troubleshooting: • If the connection fails, ensure: The WiFi router is connected to the internet with a 2.4 GHz frequency. The water heater is close to the WiFi router for a strong signal. Your mobile phone's WiFi and Bluetooth are turned on. The display panel's WiFi icon is blinking.
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