Bosch Greensource SM024 Installation, Operation And Maintenance Manual page 48
Greensource cdi series sm model water-to-air heat pumps
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Installation, operation and maintenance manual
- 100 pages
Installation and maintenance manual - 96 pages
Manual - 44 pages
Installation and maintenance manual - 96 pages
Manual - 44 pages
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48 | Unit Troubleshooting
Problem
EXCESSIVELY
WARM SUPPLY AIR
TEMPERATURE IN
COOLING AND/OR
EXCESSIVELY
COOL AIR IN
HEATING
HIGH HUMIDITY
HIGH-PRESSURE
FAULT
8733819578 (2019/02)
Unit Troubleshooting
Check
Possible Cause
Air flow too high
Fan speed setting too high
High or low
Inlet water temperature out
water
of range
temperature
Air leakage
Leaky duct work
Loss of
refrigeration
Low refrigerant
capacity
Air flow is too
Fan speed setting is too
high
high
Low
refrigeration
Low refrigerant
capacity
Unit oversized
Short cycling
Poor thermostat location
Reduced or no water flow
Water temperature out of
range
Reduced airflow
Compressor,
Loop Pump
Overcharged with
refrigerant
RAT outside of nominal
range
Bad high pressure switch
Subject to change without prior notice
Greensource CDi Series SM
Action
Consult blower performance table and
reduce fan speed if possible.
Check unit capacity vs. water
temperature.
Inspect the duct work.
Check refrigerant pressures with
gauge set.
Consult the blower performance table
and reduce fan speed if possible.
Check refrigerant pressures with
gauge set.
Check unit performance against
building load calculations.
Make sure that the thermostat is not
located near a supply air duct.
Check pump operation/check flow
rate
Bring water temperature within range.
Check for dirty air filter or coil. Check
fan motor operation and airflow
restriction.
Check and service system refrigerant.
Bring air temperature within range.
Verify continuity and/or replace
switch.
Greensource CDi Series SM Model
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Troubleshooting
Also See for Bosch Greensource SM024
Bosch SM024 Manual
44 pages
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