System type: Pumped - differential control
System not operating.
Control and valve problem.
Client stated that she thought system was still working. Inspection revealed that this was not the case.
Feed line was isolated.
Motorized check valve is not working.
Conducted check of controller with tester. Failed test. Sensor readings were reasonable. Controller exhibits cackling noise when put in off position.
Anti scald valve stuck on 4 but still working. Loosened with pliers.
Air vent was leaking.
Isolated and drained the system.