Indoor Service Manual
Table Of Contents
- Cover
- Contents
- 1. SAFETY PRECAUTION
- 2. PART NAMES AND FUNCTIONS
- 3. SPECIFICATION
- 4. FAN PERFORMANCE AND CORRECTED AIR FLOW
- 5. SOUND PRESSURE LEVELS
- 6. OUTLINES & DIMENSIONS
- 7. WIRING DIAGRAM
- 8. REFRIGERANT SYSTEM DIAGRAM
- 9. HEATER CONTROL
- 10. HUMIDIFIER CONTROL
- 11. ERV (ENERGY RECOVERY VENTILATION) CONTROL
- 12. TROUBLESHOOTING
- 12-1. Cautions on troubleshooting
- 12-2. Self-check function
- 12-3. Self-diagnosis action table
- 12-4. Troubleshooting by inferior phenomena
- 12-5. Test point diagram
- 12-6. Trouble criterion of main parts
- 12-7. Thermistor
- 12-8. DC Fan motor (FAN MOTOR/INDOOR CONTROLLER BOARD)
- 12-9. Functions of dip switch and jumper wire
- 13. DISASSEMBLY PROCEDURE
- Back Cover
Specications are subject to change without notice. © 2016 Mitsubishi Electric US, Inc.
26
HUMIDIFIER CONTROL
10-1. Control Specifications
10
A basic connection method is shown below.
CNF
CN25
Humidistat
XA
SVA
Humidifier
XA
Indoor unit
control board
On-site preparation
Maximum cable length is 10m(32ft)
power source
UseXA relay having following specifications
Rated voltage:12VDC
Power consumption:1W or less
Humidistat:Minimum applicable load 1mAat DC
Contact rating voltage:15VDC or more
Contact rating current:0.1A or more
Humidifier
The below table shows how the field installed humidifier and fan speed is controlled.
Mode (function) No.
Wired remote controller
(RF thermostat)
Humidistat
output
Condition (no defrost/no error)
CN25 output
Fan speed
13 (113) 16 (116)
CNFinput
2
1
OFFHeat operation & Thermo OFFOFF RC setting
Heat operation & Thermo ON
ON Heat operation & Thermo OFFOFF RC settin
g
Heat operation & Thermo ON ON Hi
g
h
2
OFFHeat operation & Thermo OFFOFF RC setting
Heat operation & Thermo ON
ON Heat operation & Thermo OFFONHigh
Heat operation & Thermo ON
--Except for heat operationOFF RC settin
g
RC:Remote controller
The fan continues to run for 30 seconds after the humidifier stops.
10-2. Installation