Carrier 48PG03-16 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 70

Humidizer Equipped (REHT)
Set to Yes for Humidi-MiZer equipped units. Enables
Humidi-MiZer operating modes and service test.
Reheat2 Stage Decr. Time (R.DEC)
If using adaptive control mode, then this is a time delay in staged
decrease of multiple circuits in Reheat2 mode. This delay is
overridden by a zero demand for dehumidification or a positive
demand for cooling.
Reheat2 Stage Incr. Time (R.INC)
If using adaptive control mode, then this is a time delay in staged
increase of multiple circuits in Reheat2 mode.
Reheat Fan Control (RH.FN)
Enables model specific outdoor fan control for certain models
equipped with Humidi-MiZer system.
Reheat ODF Fan On Level (RF.LV)
Sets the Reheat2 mode outdoor fan level in some model specific
fan control.
Reheat2 ODF Fan On Temp (RF.ON)
Sets the Reheat2 mode change temperature to increased outdoor
fan level.
Reheat2 ODF Fan Off Temp (RF.OF)
Sets the Reheat2 mode change temperature to decrease outdoor
fan level.
Reheat2 OAT Limi A (RA.LO)
This configuration is the low outdoor air temperature limit for
Reheat2 mode for circuit A. It will disable or enable circuit A.
Reheat2 SSP Lo Limit A (RA.LP)
This configuration is the low pressure limit for Reheat2 mode for
circuit A. It will turn valve RH2.A off.
Reheat2 SSP Hi Limit A (RA.HP)
This configuration is the high pressure limit for Reheat2 mode for
circuit A. If low pressure limit previously occurred, this limit will
turn valve RH2.A back on after 2-minute delay.
Reheat2 OAT Limit B,C (RB.LO)
This configuration is the low outdoor air temperature limit for
Reheat2 mode for circuits B and C. It will disable or enable
circuit B.
Reheat2 SSP Lo Limit B,C (RB.LP)
This configuration is the low pressure limit for Reheat2 mode for
circuits B and C. It will turn valves RH2.B and RH2.C off.
Reheat2 SSP Hi Limit B,C (RB.HP)
This configuration is the high pressure limit for Reheat2 mode for
circuits B and C. If low pressure limit previously occurred, this
limit will turn valves RH2.B and RH2.C back on after 2-minute
delay.
Reheat Mode Selection Process
Selection of the reheat mode for each refrigerant circuit is
determined from the space humidity (from RH sensor or switch
input) and the circuit cooling demand (from space temperature
sensor or thermostat input). Table 91 shows the corresponding
circuit mode and output status for the different demand
combinations.
Fig. 12- -14 show the valve locations of Humidi-MiZer™
equipped units. Units with multiple circuits can operate with a
combination of Reheat1 and Reheat2 circuits, as determined by
the amount of space cooling demand. See Appendix B for
complete tables of unit operation response to thermostat and
humidity inputs.
Reheat Mode Diagnostic Help
The status of reheat mode sensor inputs may be viewed within the
display Inputs menu. The status of reheat mode outputs may be
viewed within the display Outputs or Run Status→COOL
menus. Additional diagnostic help, including status of circuit
reheat temperature limit lockouts may be viewed within the
Humidi-MiZer sub-menu of the cooling mode diagnostic table at
Operating Modes→COOL→HMZR.
The Service Test mode may be used to force the system to operate
in various stages of Reheat1 or Reheat2 mode, or to
independently operate the reheat valve control outputs.
The following forced operating states are changed or added to the
available service test operation for a Humidi-MiZer equipped
unit:
Service Test→COOL→CMP.A (Cool A Test)
A value of On will turn on circuit A in Normal Cooling mode.
Service Test→COOL→CMP.B (Cool B Test)
A value of On will turn on circuits A and B in Normal Cooling
mode.
Service Test→COOL→CMP.C (Cool C Test)
A value of On will turn on circuits A and C in Normal Cooling
mode.
Service Test→HMZR→RH1.A (Reheat1 A Test)
A value of On will turn on circuit A in Reheat1 mode.
Service Test→HMZR→RH1.B (Reheat1 B Test)
A value of On will turn on circuits A and B in Reheat1 mode.
Service Test→HMZR→RH1.C (Reheat1 C Test)
A value of On will turn on circuits A and C in Reheat 1 mode.
Service Test→HMZR→RH2.A (Reheat2 A Test)
A value of On will turn on circuit A in Reheat2 mode.
Service Test→HMZR→RH2.B (Reheat2 B,C Test)
A value of On will turn on circuits A B and C in Reheat2 mode.
Service Test→HMZR→CRC (Cool-Reheat1 Valve Test
A value of On will turn on the CRC relay. This will turn on CV.x
valves and turn off RH1.x valves.
Service Test→HMZR→RHV.A (Reheat2 Valve A Test)
A value of On will turn on the RH2.A valve.
Service Test→HMZR→RHV.B (Reheat2 Valve B,C Test)
A value of On will turn on the RH2.B and RH2.C valves.
Service Test→Fans→OFC.1 (Outdoor Fan 1 Test)
For 48/50PG16 only: a value of On will turn on the OFC relay
only which controls status of fans 1 and 3; but fans are not
powered unless compressor
48/50PG03-14: not used.
Service Test→Fans→OFC.2 (Outdoor Fan 2 Test)
Not used.
Service Test→Fans→OFC.3 (Outdoor Fan 1 Test)
Not used.
Service Test→INDP→CCH (Crankcase Heat Test)
Not used. Compressor crankcase heaters are wired directly to line
power.
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A contactor is on. For