Heat Controller Water Source Heat Pump manual 4.0Start-Up, PriorityLowest, No.of1Blinks

WattMaster WHP Section 4

4.0Start-Up

4.1Blink Codes for WHP Controllers

The WHP Controller uses an on board LED to indicate various diagnostic conditions during powerup and operation. The WHP Unit LED is labeled “COMM”. Starting with power up the LED blink codes are as follows:

•Off for five seconds

•COMM LED blinks the board address (Address 14 = 14 blinks)

•Five second pause

•Twenty second time delay - LED blinks twenty times

•Status code is repeatedly blinked every ten seconds to indicate controller status:

PriorityLowest	No.of1Blinks		NormalStatusOperation
-	2		Override Active
-	3		Bad Space Sensor
-	4		Heat Pump Lockout
Highest	5		Communication Failure
Figure 4-6:Diagnostic LED		Codes

Only the highest priority failure code will be shown. You must correct the highest priority alarm before other problems will be indicated.

4-14 Start-Up and Troubleshooting