Armstrong The Brain DRV80 User Manual

64
Armstrong International
221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA
Ph. (269) 279-3602 Toll Free (888) 468-4673 Fax (269) 279-3130
Problem: “Unable to adjust outlet temperature...”
H C
Water pressure / ow
Make sure supply pressures are balanced.
Make sure mixed return is owing correctly to
water heater. Check for the following:
• Air locks
• Blocked strainers
• Closed valves
Checkvalves
Check circuit to make sure checkvalves are
correct positioned and operating normally.
(See Piping Diagrams on pages 12-15)
Check mixed return temperature.
Minimum recirculation loop temperature loss
= 2°F (1°C)
Check blend circuit ow rate.
Flow rate is less than 10 gpm (37.8 lpm). Reset
circuit ow rate and check for the following:
• Air locks
• Blocked strainers
• Closed valves
• Pump failure
DRV80 display errors
These are the most likely error messages
to be displayed during this problem. For the
most probable causes and solutions see
DRV80 Display Errors on page 56-57.
If any other error message is displayed see DRV80 Display Errors on page 56 - 58.
Return to Hot
Water Supply Inlet
Temp 120˚F
Error PCB
Temp 120˚F
Error Drive
Temp 120˚F
Error Temp
Temp 120˚F
Error Thermistor

Armstrong The Brain DRV80 Specifications

General

Brand	Armstrong
Model	The Brain DRV80
Category	Control Unit
Language	English