10
R
LENN X
FAULT FINDING
RUNNING
CHECK UNIT FUSE
CHECK MAINS SUPPLY
CHECK POWER SUPPLY TO FANS
RESET MCB
CHECK TRANSFORMER
CHECK CONTROLLER
REPLACE
REPLACE
MAX 3 AMP
CHECK MOTOR/CAPACITOR
REPLACE
POOR COOLING/HEATING PERFORMANCE
NOT
CHECK QUOTED AI RFLOW
EXAMINE DUC TWORK
CHECK FI LTER & COIL FOR BLOC KAGE
CHECK IMPELLOR ROT ATION
CHECK DESIGN
STATIC PRESSURE
CHECK ACTUAL STATIC
PRESSURE IN PLENUM
NOT THE DUCTWORK.
CHECK VOLTAGE TO FANS
EXAMINE SCHEDULE
EXAMINE TRANSFORMER
TAPPINGS
EXAMINE FILTER TYPE!
CLEAN OR REPLACE IF NEC,
IF EU3 FITTED CHECK COR-
RECT ALLOWANCE USED
CHECK COIL FOR
BLOCKED FINS
MOTORS/IMPELLORS
DIRECTION OF ROTATION
EXAMINE METHOD OF MEASUREMENT
CALIBRATED/CORRECTION
FACTOR
CHECK
SOURCE OF
CONTROLLER
EXAMINE SWITCH & WIRING
CRIMP CONNECTIONS,
(CONTINUITY TEST WIRES)
24V AND MAINS OUTPUT
OK, BUT:-
NEW
FANCOIL FAULT FINDING
CHECK QUANTITY &
LOCATION OF SPI GOTS
CHECK QUOTED PERFOR MANCE
WATERSIDE UNIT
AIRSIDE UNIT
CHECK DAMPER MECHANISM
CHECK SENSOR POSITION
MAY BE IN DRAFT
CHECK ACTUATOR
EXAMINE VALVES & ACTU ATORS
EXAMINE WATER FLOW TEMPERATURE
FANCOIL WORKING
CORRECTLY
IF FREE ISSUE
INFORM SUPPLIER
IF NOT REPLACE
CHECK SOURCE
OK
CONTINUE
NOT WORKING
EXAMINE
ADD LINK BE-
TWEEN TERM 8 &
9. IF FCU WORKS
CONTROLLER IS
FAULTY
IF FITTED CHECK THERMOSTAT SETTING
EXAMINE SET POINT
& WIRING
IF FREE ISSUE
INFORM SUP-
PLIER
IF NOT REPLACE
SENSOR MAY BE TOO CLOSE
TO DISCHARGE GRILL.
POOR AIRFLOW
OK, BUT:-
Noisy
ENSURE AHU WAS TURNED
OFF WHILE SOUND TESTING
CHECK IMPELLORS ARE
TIGHT AND CENTRAL ON
SHAFT WITHIN SCROLLS
