Today I arrived on site to address parts replacements at the boiler unit, which services the heating and DHW systems. Parts Replaced:Replaced the defective main control module. Replaced the defective screen control. Replaced the defective limit switch. Upon arriving at the property, I explained to the customer about the repair scheduled for this day. The client directed me to the boiler room. I proceeded to do the visual inspection of the system. I proceeded to disassemble the defective parts. I proceeded to install the necessary parts to repair the system. Install the following parts in this unit: -Main control module. -Secondary screen control. -Limit Switch. I made the connections and adjustments necessary to conclude with the repairs of the unit. I started monitoring the system for about 30 minutes. The system did not fail or malfunction after concluding with operations and verifications. I informed the customer that I had completed the repair. The client informed m