Daikin SkyAir RZR-P Series Service Manual page 68

Outline of Control (Indoor Unit)
6.8.2 Heat Pump Lockout Mode
During heating operation, users can select an electrical heater for heating. For this, signals are
sent using ABC terminal of outdoor unit PCB.
When the hot-water heating signal is received from the outdoor unit PCB, heating operation is
performed only with the heater as manual backup operation. The ON/OFF conditions for this
electrical heater are shown below.
Thermostat OFF/Stop operation
Thermostat ON
Thermostat step 1 H/P
Fan: Normal operation
Condition A
Timer count: 5 minutes
Electrical heater step setting 01
Thermostat step 2 = "ON"
Timer count: 5 minutes
Thermostat step 3 = "ON"
Timer count: 5 minutes
Function and Control
• Thermostat OFF
• Stop operation
Heater 1 ON
Heater 2 OFF
Fan H tap ∗1
Timer clear
Thermostat step 2 = "OFF"
Heater 1 ON
Heater 2 ON
Fan H tap ∗1
Timer clear
Thermostat step 3 = "OFF"
Heater 1 ON
Heater 2 ON
Fan H tap ∗1
Fan H tap
120 seconds ∗3
Fan H tap
120 seconds ∗3
Condition B
Condition B
Condition B
SiUS281117
Timer clear
61