Arrived on site client stated his sump pump that we installed last year is no draining longer pumping out any water. Upon inspection client stated he had a company at his home to install a humidifier in his crawlspace and it appears they raised the pump too high up not allowing the float on the pump to activate and they also installed a second check valve. Client wanted them to pay for the work to performed but the humidifier company said they would have someone out to fix it.