Just got your Cobectal CT1 countertop reverse osmosis water purifier and panicked when random codes popped up on the screen? Don't worry—you're not the only one! We've compiled a concise guide to all common codes for this machine. Next time you encounter a code, simply match it to the corresponding explanation for a quick fix.
1. Water Tank Related Codes: E00/E01/E02/E06
These codes all indicate water tank issues—no need to panic. First, check the tank status:
- E00: Maintenance tank is empty or water level is too low. Simply refill it to resume operation.
- E01: Drinking water tank is empty or water level is too low. Refill the drinking water tank directly from the water source.
- E02: Purified water tank is empty or water level is too low. Add water to the purified water tank to resolve.
- E06: Machine fails to detect the inlet water tank. First, ensure the inlet water tank is properly installed—removing and securely repositioning it usually resolves the issue.
2. Water Quality/Filter Cartridge Error Codes: E03/E04
These codes relate to water purity and require special attention:
- E03: Abnormal TDS value in incoming water. (Note: TDS stands for Total Dissolved Solids, measuring dissolved substance concentration in water.) Typically indicates significant fluctuations in source water quality. We recommend pausing use and verifying source water meets equipment requirements.
- E04: Filter cartridge has reached end-of-life! This is a critical warning signal—replace the cartridge immediately to maintain optimal purification performance.
3. Normal Operation Codes: E88/E99
No need for concern when these codes appear—they simply indicate the unit's operational status:
- E88: Water filtration system is functioning normally with stable operation.
- E99: Water filtration system has entered high-altitude mode.
Whenever your Cobectal CT1 RO water purifier displays these codes, simply refer to this guide to instantly understand the device's status!