diff --git a/src/hm/hmInverter.h b/src/hm/hmInverter.h
index bbe859de..3575e94a 100644
--- a/src/hm/hmInverter.h
+++ b/src/hm/hmInverter.h
@@ -264,9 +264,9 @@ class Inverter {
                             val <<= 8;
                             val |= buf[ptr];
                         } while(++ptr != end);
-                        if (FLD_T == rec->assign[pos].fieldId) {
-                            // temperature is a signed value!
-                            rec->record[pos] = (REC_TYP)((int16_t)val) / (REC_TYP)(div);
+                        if ((FLD_T == rec->assign[pos].fieldId) || (FLD_Q == rec->assign[pos].fieldId) || (FLD_PF == rec->assign[pos].fieldId)) {
+                            // temperature, Qvar, and power factor are a signed values
+                            rec->record[pos] = ((REC_TYP)((int16_t)val)) / (REC_TYP)(div);
                         } else if (FLD_YT == rec->assign[pos].fieldId) {
                             rec->record[pos] = ((REC_TYP)(val) / (REC_TYP)(div)) + ((REC_TYP)config->yieldCor[rec->assign[pos].ch-1]);
                         } else {
diff --git a/src/hms/hmsDefines.h b/src/hms/hmsDefines.h
index 2083783a..7246dd5b 100644
--- a/src/hms/hmsDefines.h
+++ b/src/hms/hmsDefines.h
@@ -43,7 +43,7 @@ const byteAssign_t hms4chAssignment[] = {
     { FLD_PAC, UNIT_W,    CH0, 54, 2,   10 },
     { FLD_Q,   UNIT_VAR,  CH0, 56, 2,   10 }, // signed!
     { FLD_IAC, UNIT_A,    CH0, 58, 2,  100 },
-    { FLD_PF,  UNIT_NONE, CH0, 60, 2, 1000 },
+    { FLD_PF,  UNIT_NONE, CH0, 60, 2, 1000 }, // signed!
     { FLD_T,   UNIT_C,    CH0, 62, 2,   10 }, // signed!
     { FLD_EVT, UNIT_NONE, CH0, 64, 2,    1 },
     { FLD_YD,  UNIT_WH,   CH0, CALC_YD_CH0,  0, CMD_CALC },